97694639 has 16 divisors (see below), whose sum is σ = 117995520. Its totient is φ = 79073280.

The previous prime is 97694633. The next prime is 97694647. The reversal of 97694639 is 93649679.

It is a cyclic number.

It is not a de Polignac number, because 97694639 - 2²⁴ = 80917423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97694633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8879 + ... + 16559.

It is an arithmetic number, because the mean of its divisors is an integer number (7374720).

Almost surely, 2^97694639 is an apocalyptic number.

97694639 is a deficient number, since it is larger than the sum of its proper divisors (20300881).

97694639 is a wasteful number, since it uses less digits than its factorization.

97694639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7790.

The product of its digits is 2204496, while the sum is 53.

The square root of 97694639 is about 9884.0598440115. The cubic root of 97694639 is about 460.5642713066.

The spelling of 97694639 in words is "ninety-seven million, six hundred ninety-four thousand, six hundred thirty-nine".