97565889 has 8 divisors (see below), whose sum is σ = 134573760. Its totient is φ = 62800976.

The previous prime is 97565879. The next prime is 97565903. The reversal of 97565889 is 98856579.

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 97565889 - 2²³ = 89177281 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (97565879) 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 7 ways as a sum of consecutive naturals, for example, 560637 + ... + 560810.

It is an arithmetic number, because the mean of its divisors is an integer number (16821720).

Almost surely, 2^97565889 is an apocalyptic number.

It is an amenable number.

97565889 is a deficient number, since it is larger than the sum of its proper divisors (37007871).

97565889 is a wasteful number, since it uses less digits than its factorization.

97565889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121479.

The product of its digits is 5443200, while the sum is 57.

The square root of 97565889 is about 9877.5446847888. The cubic root of 97565889 is about 460.3618592509.

The spelling of 97565889 in words is "ninety-seven million, five hundred sixty-five thousand, eight hundred eighty-nine".