87685402 has 12 divisors (see below), whose sum is σ = 153002250. Its totient is φ = 37579416.

The previous prime is 87685393. The next prime is 87685417. The reversal of 87685402 is 20458678.

It can be written as a sum of positive squares in only one way, i.e., 81920601 + 5764801 = 9051^2 + 2401^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 447277 + ... + 447472.

Almost surely, 2^87685402 is an apocalyptic number.

87685402 is a deficient number, since it is larger than the sum of its proper divisors (65316848).

87685402 is a wasteful number, since it uses less digits than its factorization.

87685402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894765 (or 894758 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 87685402 is about 9364.0483766371. The cubic root of 87685402 is about 444.2653400046.

The spelling of 87685402 in words is "eighty-seven million, six hundred eighty-five thousand, four hundred two".