97689680 has 80 divisors (see below), whose sum is σ = 255840768. Its totient is φ = 34368000.

The previous prime is 97689673. The next prime is 97689703. The reversal of 97689680 is 8698679.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25490 + ... + 29070.

Almost surely, 2^97689680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97689680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127920384).

97689680 is an abundant number, since it is smaller than the sum of its proper divisors (158151088).

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

97689680 is a wasteful number, since it uses less digits than its factorization.

97689680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3636 (or 3630 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 53.

The square root of 97689680 is about 9883.8089823711. The cubic root of 97689680 is about 460.5564783956.

The spelling of 97689680 in words is "ninety-seven million, six hundred eighty-nine thousand, six hundred eighty".