87695775 has 72 divisors (see below), whose sum is σ = 168699024. Its totient is φ = 43392000.

The previous prime is 87695759. The next prime is 87695789. The reversal of 87695775 is 57759678.

87695775 is a `hidden beast` number, since 8 + 7 + 69 + 577 + 5 = 666.

It is not a de Polignac number, because 87695775 - 2⁴ = 87695759 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 386212 + ... + 386438.

It is an arithmetic number, because the mean of its divisors is an integer number (2343042).

Almost surely, 2^87695775 is an apocalyptic number.

87695775 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

87695775 is a deficient number, since it is larger than the sum of its proper divisors (81003249).

87695775 is a wasteful number, since it uses less digits than its factorization.

87695775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 353 counting only the distinct ones).

The product of its digits is 3704400, while the sum is 54.

The square root of 87695775 is about 9364.6022339446. The cubic root of 87695775 is about 444.2828578679.

The spelling of 87695775 in words is "eighty-seven million, six hundred ninety-five thousand, seven hundred seventy-five".