89520815 has 16 divisors (see below), whose sum is σ = 109438560. Its totient is φ = 70287360.

The previous prime is 89520811. The next prime is 89520833. The reversal of 89520815 is 51802598.

It is not a de Polignac number, because 89520815 - 2² = 89520811 is a prime.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89520811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62831 + ... + 64239.

It is an arithmetic number, because the mean of its divisors is an integer number (6839910).

Almost surely, 2^89520815 is an apocalyptic number.

89520815 is a deficient number, since it is larger than the sum of its proper divisors (19917745).

89520815 is a wasteful number, since it uses less digits than its factorization.

89520815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 89520815 is about 9461.5440071904. The cubic root of 89520815 is about 447.3437174691.

The spelling of 89520815 in words is "eighty-nine million, five hundred twenty thousand, eight hundred fifteen".