77440074 has 16 divisors (see below), whose sum is σ = 157192608. Its totient is φ = 25427952.

The previous prime is 77440061. The next prime is 77440123. The reversal of 77440074 is 47004477.

It is a super-2 number, since 2×77440074² = 11993930122250952, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95917 + ... + 96720.

It is an arithmetic number, because the mean of its divisors is an integer number (9824538).

Almost surely, 2^77440074 is an apocalyptic number.

77440074 is an abundant number, since it is smaller than the sum of its proper divisors (79752534).

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

77440074 is a wasteful number, since it uses less digits than its factorization.

77440074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192709.

The product of its (nonzero) digits is 21952, while the sum is 33.

The square root of 77440074 is about 8800.0042045445. The cubic root of 77440074 is about 426.2410304755.

The spelling of 77440074 in words is "seventy-seven million, four hundred forty thousand, seventy-four".