87705045 has 64 divisors (see below), whose sum is σ = 169574400. Its totient is φ = 42845760.

The previous prime is 87705031. The next prime is 87705053. The reversal of 87705045 is 54050778.

87705045 is a `hidden beast` number, since 87 + 70 + 504 + 5 = 666.

It is not a de Polignac number, because 87705045 - 2⁷ = 87704917 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 78964 + ... + 80066.

It is an arithmetic number, because the mean of its divisors is an integer number (2649600).

Almost surely, 2^87705045 is an apocalyptic number.

It is an amenable number.

87705045 is a deficient number, since it is larger than the sum of its proper divisors (81869355).

87705045 is a wasteful number, since it uses less digits than its factorization.

87705045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167 (or 1161 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 87705045 is about 9365.0971698109. The cubic root of 87705045 is about 444.2985118223.

The spelling of 87705045 in words is "eighty-seven million, seven hundred five thousand, forty-five".