79681896 has 192 divisors, whose sum is σ = 266198400. Its totient is φ = 21026304.

The previous prime is 79681891. The next prime is 79681963. The reversal of 79681896 is 69818697.

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

It is not an unprimeable number, because it can be changed into a prime (79681891) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 507450 + ... + 507606.

It is an arithmetic number, because the mean of its divisors is an integer number (1386450).

Almost surely, 2^79681896 is an apocalyptic number.

79681896 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79681896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133099200).

79681896 is an abundant number, since it is smaller than the sum of its proper divisors (186516504).

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

79681896 is a wasteful number, since it uses less digits than its factorization.

79681896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 241 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 79681896 is about 8926.4716433762. The cubic root of 79681896 is about 430.3150674484.

The spelling of 79681896 in words is "seventy-nine million, six hundred eighty-one thousand, eight hundred ninety-six".