80879616 has 84 divisors (see below), whose sum is σ = 233850942. Its totient is φ = 26935296.

The previous prime is 80879609. The next prime is 80879633. The reversal of 80879616 is 61697808.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 74649600 + 6230016 = 8640^2 + 2496^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73180 + ... + 74276.

Almost surely, 2^80879616 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 80879616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116925471).

80879616 is an abundant number, since it is smaller than the sum of its proper divisors (152971326).

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

80879616 is a wasteful number, since it uses less digits than its factorization.

80879616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129 (or 1102 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 80879616 is about 8993.3095131881. The cubic root of 80879616 is about 432.4604144776.

The spelling of 80879616 in words is "eighty million, eight hundred seventy-nine thousand, six hundred sixteen".