87906057 has 8 divisors (see below), whose sum is σ = 118368960. Its totient is φ = 58023600.

The previous prime is 87906053. The next prime is 87906059. The reversal of 87906057 is 75060978.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87906057 - 2² = 87906053 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87906053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144757 + ... + 145362.

It is an arithmetic number, because the mean of its divisors is an integer number (14796120).

Almost surely, 2^87906057 is an apocalyptic number.

It is an amenable number.

87906057 is a deficient number, since it is larger than the sum of its proper divisors (30462903).

87906057 is a wasteful number, since it uses less digits than its factorization.

87906057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290223.

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 87906057 is about 9375.8230038754. The cubic root of 87906057 is about 444.6376834537.

The spelling of 87906057 in words is "eighty-seven million, nine hundred six thousand, fifty-seven".