97559609 has 16 divisors (see below), whose sum is σ = 114658560. Its totient is φ = 81285120.

The previous prime is 97559599. The next prime is 97559621. The reversal of 97559609 is 90695579.

It is not a de Polignac number, because 97559609 - 2²⁴ = 80782393 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (97559659) 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, 34937 + ... + 37625.

It is an arithmetic number, because the mean of its divisors is an integer number (7166160).

Almost surely, 2^97559609 is an apocalyptic number.

It is an amenable number.

97559609 is a deficient number, since it is larger than the sum of its proper divisors (17098951).

97559609 is a wasteful number, since it uses less digits than its factorization.

97559609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2840.

The product of its (nonzero) digits is 765450, while the sum is 50.

The square root of 97559609 is about 9877.2267869073. The cubic root of 97559609 is about 460.3519817055.

The spelling of 97559609 in words is "ninety-seven million, five hundred fifty-nine thousand, six hundred nine".