97790015 has 16 divisors (see below), whose sum is σ = 119697696. Its totient is φ = 76675200.

The previous prime is 97790009. The next prime is 97790029. The reversal of 97790015 is 51009779.

It is not a de Polignac number, because 97790015 - 2⁸ = 97789759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149429 + ... + 150081.

It is an arithmetic number, because the mean of its divisors is an integer number (7481106).

Almost surely, 2^97790015 is an apocalyptic number.

97790015 is a deficient number, since it is larger than the sum of its proper divisors (21907681).

97790015 is a wasteful number, since it uses less digits than its factorization.

97790015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210.

The product of its (nonzero) digits is 19845, while the sum is 38.

The square root of 97790015 is about 9888.8834051171. The cubic root of 97790015 is about 460.7141003774.

The spelling of 97790015 in words is "ninety-seven million, seven hundred ninety thousand, fifteen".