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680966743 = 4871398289
BaseRepresentation
bin101000100101101…
…011101001010111
31202110100200202111
4220211223221113
52343311413433
6151323251451
722606056532
oct5045535127
91673320674
10680966743
1131a42a436
12170079b87
13ab107002
1466621a19
153ebb2dcd
hex2896ba57

680966743 has 4 divisors (see below), whose sum is σ = 682365520. Its totient is φ = 679567968.

The previous prime is 680966717. The next prime is 680966747. The reversal of 680966743 is 347669086.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-680966743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680966747) 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, 698658 + ... + 699631.

It is an arithmetic number, because the mean of its divisors is an integer number (170591380).

Almost surely, 2680966743 is an apocalyptic number.

680966743 is a deficient number, since it is larger than the sum of its proper divisors (1398777).

680966743 is a wasteful number, since it uses less digits than its factorization.

680966743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398776.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The square root of 680966743 is about 26095.3394881155. The cubic root of 680966743 is about 879.7824630162.

The spelling of 680966743 in words is "six hundred eighty million, nine hundred sixty-six thousand, seven hundred forty-three".

Divisors: 1 487 1398289 680966743