87605402 has 16 divisors (see below), whose sum is σ = 133941480. Its totient is φ = 42964992.

The previous prime is 87605359. The next prime is 87605417. The reversal of 87605402 is 20450678.

It can be written as a sum of positive squares in 4 ways, for example, as 53860921 + 33744481 = 7339^2 + 5809^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26624 + ... + 29732.

Almost surely, 2^87605402 is an apocalyptic number.

87605402 is a deficient number, since it is larger than the sum of its proper divisors (46336078).

87605402 is a wasteful number, since it uses less digits than its factorization.

87605402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3377.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 87605402 is about 9359.7757451768. The cubic root of 87605402 is about 444.1301900230.

The spelling of 87605402 in words is "eighty-seven million, six hundred five thousand, four hundred two".