76897257 has 16 divisors (see below), whose sum is σ = 108349440. Its totient is φ = 48411792.

The previous prime is 76897253. The next prime is 76897277. The reversal of 76897257 is 75279867.

It is not a de Polignac number, because 76897257 - 2² = 76897253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76897253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1603 + ... + 12504.

It is an arithmetic number, because the mean of its divisors is an integer number (6771840).

Almost surely, 2^76897257 is an apocalyptic number.

It is an amenable number.

76897257 is a deficient number, since it is larger than the sum of its proper divisors (31452183).

76897257 is a wasteful number, since it uses less digits than its factorization.

76897257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14212.

The product of its digits is 1481760, while the sum is 51.

The square root of 76897257 is about 8769.1081074417. The cubic root of 76897257 is about 425.2427807778.

The spelling of 76897257 in words is "seventy-six million, eight hundred ninety-seven thousand, two hundred fifty-seven".