87625775 has 6 divisors (see below), whose sum is σ = 108655992. Its totient is φ = 70100600.

The previous prime is 87625771. The next prime is 87625789. The reversal of 87625775 is 57752678.

It is a happy number.

It is not a de Polignac number, because 87625775 - 2² = 87625771 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 (87625771) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1752491 + ... + 1752540.

It is an arithmetic number, because the mean of its divisors is an integer number (18109332).

Almost surely, 2^87625775 is an apocalyptic number.

87625775 is a deficient number, since it is larger than the sum of its proper divisors (21030217).

87625775 is a wasteful number, since it uses less digits than its factorization.

87625775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3505041 (or 3505036 counting only the distinct ones).

The product of its digits is 823200, while the sum is 47.

The square root of 87625775 is about 9360.8640092675. The cubic root of 87625775 is about 444.1646154612.

The spelling of 87625775 in words is "eighty-seven million, six hundred twenty-five thousand, seven hundred seventy-five".