97638669 has 16 divisors (see below), whose sum is σ = 145223040. Its totient is φ = 64834560.

The previous prime is 97638649. The next prime is 97638691. The reversal of 97638669 is 96683679.

It is a happy number.

It is not a de Polignac number, because 97638669 - 2⁵ = 97638637 is a prime.

It is a super-2 number, since 2×97638669² = 19066619368183122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97638649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97 + ... + 13974.

It is an arithmetic number, because the mean of its divisors is an integer number (9076440).

Almost surely, 2^97638669 is an apocalyptic number.

It is an amenable number.

97638669 is a deficient number, since it is larger than the sum of its proper divisors (47584371).

97638669 is a wasteful number, since it uses less digits than its factorization.

97638669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14337 (or 14331 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 97638669 is about 9881.2281119302. The cubic root of 97638669 is about 460.4763009162.

The spelling of 97638669 in words is "ninety-seven million, six hundred thirty-eight thousand, six hundred sixty-nine".