76872897 has 12 divisors (see below), whose sum is σ = 111137364. Its totient is φ = 51203040.

The previous prime is 76872893. The next prime is 76872911. The reversal of 76872897 is 79827867.

It can be written as a sum of positive squares in 2 ways, for example, as 41873841 + 34999056 = 6471^2 + 5916^2 .

It is not a de Polignac number, because 76872897 - 2² = 76872893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76872893) 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 11 ways as a sum of consecutive naturals, for example, 9247 + ... + 15467.

It is an arithmetic number, because the mean of its divisors is an integer number (9261447).

Almost surely, 2^76872897 is an apocalyptic number.

It is an amenable number.

76872897 is a deficient number, since it is larger than the sum of its proper divisors (34264467).

76872897 is a wasteful number, since it uses less digits than its factorization.

76872897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7600 (or 7597 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 54.

The square root of 76872897 is about 8767.7190306259. The cubic root of 76872897 is about 425.1978723351.

The spelling of 76872897 in words is "seventy-six million, eight hundred seventy-two thousand, eight hundred ninety-seven".