97091664 has 20 divisors (see below), whose sum is σ = 250820256. Its totient is φ = 32363872.

The previous prime is 97091609. The next prime is 97091669. The reversal of 97091664 is 46619079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97091669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1011324 + ... + 1011419.

Almost surely, 2^97091664 is an apocalyptic number.

It is an amenable number.

97091664 is an abundant number, since it is smaller than the sum of its proper divisors (153728592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97091664 is a wasteful number, since it uses less digits than its factorization.

97091664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022754 (or 2022748 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 97091664 is about 9853.5102374738. The cubic root of 97091664 is about 459.6147751539.

The spelling of 97091664 in words is "ninety-seven million, ninety-one thousand, six hundred sixty-four".