79841664 has 96 divisors (see below), whose sum is σ = 262601040. Its totient is φ = 22809600.

The previous prime is 79841659. The next prime is 79841677. The reversal of 79841664 is 46614897.

It is a tau number, because it is divible by the number of its divisors (96).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3114 + ... + 13014.

Almost surely, 2^79841664 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 79841664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131300520).

79841664 is an abundant number, since it is smaller than the sum of its proper divisors (182759376).

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

79841664 is a wasteful number, since it uses less digits than its factorization.

79841664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9928 (or 9913 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 79841664 is about 8935.4162745784. The cubic root of 79841664 is about 430.6024797813.

The spelling of 79841664 in words is "seventy-nine million, eight hundred forty-one thousand, six hundred sixty-four".