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674130757 = 5211293917
BaseRepresentation
bin101000001011100…
…110101101000101
31201222111101112211
4220023212231011
52340034141012
6150520543421
722464005536
oct5013465505
91658441484
10674130757
11316590463
12169921b71
13a9882651
146576268d
153e2b26a7
hex282e6b45

674130757 has 4 divisors (see below), whose sum is σ = 675425196. Its totient is φ = 672836320.

The previous prime is 674130749. The next prime is 674130763. The reversal of 674130757 is 757031476.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86601636 + 587529121 = 9306^2 + 24239^2 .

It is a cyclic number.

It is not a de Polignac number, because 674130757 - 23 = 674130749 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674130707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 646438 + ... + 647479.

It is an arithmetic number, because the mean of its divisors is an integer number (168856299).

Almost surely, 2674130757 is an apocalyptic number.

It is an amenable number.

674130757 is a deficient number, since it is larger than the sum of its proper divisors (1294439).

674130757 is a wasteful number, since it uses less digits than its factorization.

674130757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294438.

The product of its (nonzero) digits is 123480, while the sum is 40.

The square root of 674130757 is about 25964.0281350949. The cubic root of 674130757 is about 876.8286142396.

The spelling of 674130757 in words is "six hundred seventy-four million, one hundred thirty thousand, seven hundred fifty-seven".

Divisors: 1 521 1293917 674130757