87801705 has 64 divisors (see below), whose sum is σ = 165715200. Its totient is φ = 44029440.

The previous prime is 87801697. The next prime is 87801731. The reversal of 87801705 is 50710878.

It is not a de Polignac number, because 87801705 - 2³ = 87801697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87801705.

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, 160242 + ... + 160788.

It is an arithmetic number, because the mean of its divisors is an integer number (2589300).

Almost surely, 2^87801705 is an apocalyptic number.

It is an amenable number.

87801705 is a deficient number, since it is larger than the sum of its proper divisors (77913495).

87801705 is a wasteful number, since it uses less digits than its factorization.

87801705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 36.

The square root of 87801705 is about 9370.2563999071. The cubic root of 87801705 is about 444.4616728159.

The spelling of 87801705 in words is "eighty-seven million, eight hundred one thousand, seven hundred five".