97690609679 has 4 divisors (see below), whose sum is σ = 105205271976. Its totient is φ = 90175947384.

The previous prime is 97690609661. The next prime is 97690609729.

97690609679 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97690609679 - 2²⁴ = 97673832463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97690609579) 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 3 ways as a sum of consecutive naturals, for example, 3757331129 + ... + 3757331154.

It is an arithmetic number, because the mean of its divisors is an integer number (26301317994).

Almost surely, 2^97690609679 is an apocalyptic number.

97690609679 is a deficient number, since it is larger than the sum of its proper divisors (7514662297).

97690609679 is a wasteful number, since it uses less digits than its factorization.

97690609679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7514662296.

The product of its (nonzero) digits is 69441624, while the sum is 68.

The spelling of 97690609679 in words is "ninety-seven billion, six hundred ninety million, six hundred nine thousand, six hundred seventy-nine".