77113645 has 16 divisors (see below), whose sum is σ = 105907968. Its totient is φ = 52801920.

The previous prime is 77113643. The next prime is 77113651. The reversal of 77113645 is 54631177.

It is not a de Polignac number, because 77113645 - 2¹ = 77113643 is a prime.

It is a super-3 number, since 3×77113645³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77113645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77113643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35017 + ... + 37153.

It is an arithmetic number, because the mean of its divisors is an integer number (6619248).

Almost surely, 2^77113645 is an apocalyptic number.

It is an amenable number.

77113645 is a deficient number, since it is larger than the sum of its proper divisors (28794323).

77113645 is a wasteful number, since it uses less digits than its factorization.

77113645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3180.

The product of its digits is 17640, while the sum is 34.

The square root of 77113645 is about 8781.4375246881. The cubic root of 77113645 is about 425.6412833214.

The spelling of 77113645 in words is "seventy-seven million, one hundred thirteen thousand, six hundred forty-five".