97578659 has 4 divisors (see below), whose sum is σ = 97637016. Its totient is φ = 97520304.

The previous prime is 97578643. The next prime is 97578697. The reversal of 97578659 is 95687579.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95687579 = 13 ⋅7360583.

It is a cyclic number.

It is not a de Polignac number, because 97578659 - 2⁴ = 97578643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97578619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26594 + ... + 30039.

It is an arithmetic number, because the mean of its divisors is an integer number (24409254).

Almost surely, 2^97578659 is an apocalyptic number.

97578659 is a deficient number, since it is larger than the sum of its proper divisors (58357).

97578659 is a wasteful number, since it uses less digits than its factorization.

97578659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58356.

The product of its digits is 4762800, while the sum is 56.

The square root of 97578659 is about 9878.1910793424. The cubic root of 97578659 is about 460.3819433348.

The spelling of 97578659 in words is "ninety-seven million, five hundred seventy-eight thousand, six hundred fifty-nine".