89790615 has 36 divisors (see below), whose sum is σ = 159660072. Its totient is φ = 46680960.

The previous prime is 89790611. The next prime is 89790677. The reversal of 89790615 is 51609798.

It is not a de Polignac number, because 89790615 - 2² = 89790611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89790611) by changing a digit.

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 in 35 ways as a sum of consecutive naturals, for example, 75052 + ... + 76238.

It is an arithmetic number, because the mean of its divisors is an integer number (4435002).

Almost surely, 2^89790615 is an apocalyptic number.

89790615 is a deficient number, since it is larger than the sum of its proper divisors (69869457).

89790615 is a wasteful number, since it uses less digits than its factorization.

89790615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280 (or 1236 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 89790615 is about 9475.7909960066. The cubic root of 89790615 is about 447.7926718569.

The spelling of 89790615 in words is "eighty-nine million, seven hundred ninety thousand, six hundred fifteen".