97813915 has 8 divisors (see below), whose sum is σ = 117890640. Its totient is φ = 77908512.

The previous prime is 97813907. The next prime is 97813939. The reversal of 97813915 is 51931879.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97813915 - 2³ = 97813907 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41569 + ... + 43858.

It is an arithmetic number, because the mean of its divisors is an integer number (14736330).

Almost surely, 2^97813915 is an apocalyptic number.

97813915 is a deficient number, since it is larger than the sum of its proper divisors (20076725).

97813915 is a wasteful number, since it uses less digits than its factorization.

97813915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85661.

The product of its digits is 68040, while the sum is 43.

The square root of 97813915 is about 9890.0917589272. The cubic root of 97813915 is about 460.7516303511.

The spelling of 97813915 in words is "ninety-seven million, eight hundred thirteen thousand, nine hundred fifteen".