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76131607 = 372057611
BaseRepresentation
bin1001000100110…
…10110100010111
312022020212221011
410202122310113
5123442202412
611315433051
71613052016
oct442326427
9168225834
1076131607
1139a79892
12215b5787
1312a076b6
14a17aa7d
156a3c7a7
hex489ad17

76131607 has 4 divisors (see below), whose sum is σ = 78189256. Its totient is φ = 74073960.

The previous prime is 76131577. The next prime is 76131619. The reversal of 76131607 is 70613167.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70613167 = 588112007.

It is a cyclic number.

It is not a de Polignac number, because 76131607 - 219 = 75607319 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 (76131637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1028769 + ... + 1028842.

It is an arithmetic number, because the mean of its divisors is an integer number (19547314).

Almost surely, 276131607 is an apocalyptic number.

76131607 is a deficient number, since it is larger than the sum of its proper divisors (2057649).

76131607 is a wasteful number, since it uses less digits than its factorization.

76131607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057648.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 76131607 is about 8725.3428012887. The cubic root of 76131607 is about 423.8267191984.

It can be divided in two parts, 7613160 and 7, that added together give a palindrome (7613167).

The spelling of 76131607 in words is "seventy-six million, one hundred thirty-one thousand, six hundred seven".

Divisors: 1 37 2057611 76131607