97618609 has 4 divisors (see below), whose sum is σ = 106493040. Its totient is φ = 88744180.

The previous prime is 97618603. The next prime is 97618613. The reversal of 97618609 is 90681679.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97618609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97618603) 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 3 ways as a sum of consecutive naturals, for example, 4437199 + ... + 4437220.

It is an arithmetic number, because the mean of its divisors is an integer number (26623260).

Almost surely, 2^97618609 is an apocalyptic number.

It is an amenable number.

97618609 is a deficient number, since it is larger than the sum of its proper divisors (8874431).

97618609 is a wasteful number, since it uses less digits than its factorization.

97618609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8874430.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 97618609 is about 9880.2130037768. The cubic root of 97618609 is about 460.4447635914. Note that the first 3 decimals are identical.

The spelling of 97618609 in words is "ninety-seven million, six hundred eighteen thousand, six hundred nine".