97136639 has 8 divisors (see below), whose sum is σ = 99867648. Its totient is φ = 94433400.

The previous prime is 97136621. The next prime is 97136687. The reversal of 97136639 is 93663179.

It is a happy number.

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 97136639 - 2²⁴ = 80359423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97136639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97132639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254 + ... + 13940.

It is an arithmetic number, because the mean of its divisors is an integer number (12483456).

Almost surely, 2^97136639 is an apocalyptic number.

97136639 is a deficient number, since it is larger than the sum of its proper divisors (2731009).

97136639 is a wasteful number, since it uses less digits than its factorization.

97136639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13885.

The product of its digits is 183708, while the sum is 44.

The square root of 97136639 is about 9855.7921548702. The cubic root of 97136639 is about 459.6857320987.

The spelling of 97136639 in words is "ninety-seven million, one hundred thirty-six thousand, six hundred thirty-nine".