87964257 has 16 divisors (see below), whose sum is σ = 119778048. Its totient is φ = 57406080.

The previous prime is 87964249. The next prime is 87964271. The reversal of 87964257 is 75246978.

It is not a de Polignac number, because 87964257 - 2³ = 87964249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87964237) 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, 41608 + ... + 43670.

It is an arithmetic number, because the mean of its divisors is an integer number (7486128).

Almost surely, 2^87964257 is an apocalyptic number.

It is an amenable number.

87964257 is a deficient number, since it is larger than the sum of its proper divisors (31813791).

87964257 is a wasteful number, since it uses less digits than its factorization.

87964257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360.

The product of its digits is 846720, while the sum is 48.

The square root of 87964257 is about 9378.9262178567. The cubic root of 87964257 is about 444.7357889584.

The spelling of 87964257 in words is "eighty-seven million, nine hundred sixty-four thousand, two hundred fifty-seven".