89811604 has 6 divisors (see below), whose sum is σ = 157170314. Its totient is φ = 44905800.

The previous prime is 89811599. The next prime is 89811641. The reversal of 89811604 is 40611898.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 45562500 + 44249104 = 6750^2 + 6652^2 .

It is a super-2 number, since 2×89811604² = 16132248426105632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11226447 + ... + 11226454.

Almost surely, 2^89811604 is an apocalyptic number.

It is an amenable number.

89811604 is a deficient number, since it is larger than the sum of its proper divisors (67358710).

89811604 is a wasteful number, since it uses less digits than its factorization.

89811604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22452905 (or 22452903 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 89811604 is about 9476.8984377802. The cubic root of 89811604 is about 447.8275603886.

It can be divided in two parts, 8981 and 1604, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 89811604 in words is "eighty-nine million, eight hundred eleven thousand, six hundred four".