79065840 has 160 divisors (see below), whose sum is σ = 294981120. Its totient is φ = 17114112.

The previous prime is 79065839. The next prime is 79065853. The reversal of 79065840 is 4856097.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30682 + ... + 33158.

It is an arithmetic number, because the mean of its divisors is an integer number (1843632).

Almost surely, 2^79065840 is an apocalyptic number.

79065840 is a gapful number since it is divisible by the number (70) 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 79065840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147490560).

79065840 is an abundant number, since it is smaller than the sum of its proper divisors (215915280).

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

79065840 is a wasteful number, since it uses less digits than its factorization.

79065840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2519 (or 2513 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 79065840 is about 8891.8974353059. The cubic root of 79065840 is about 429.2032116846.

The spelling of 79065840 in words is "seventy-nine million, sixty-five thousand, eight hundred forty".