745765680 has 80 divisors (see below), whose sum is σ = 2522052864. Its totient is φ = 180791040.

The previous prime is 745765679. The next prime is 745765697. The reversal of 745765680 is 86567547.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138604 + ... + 143883.

Almost surely, 2^745765680 is an apocalyptic number.

It is an amenable number.

745765680 is an abundant number, since it is smaller than the sum of its proper divisors (1776287184).

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

745765680 is a wasteful number, since it uses less digits than its factorization.

745765680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282514 (or 282508 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 48.

The square root of 745765680 is about 27308.7106982369. The cubic root of 745765680 is about 906.8472307143.

It can be divided in two parts, 7457 and 65680, that added together give a palindrome (73137).

The spelling of 745765680 in words is "seven hundred forty-five million, seven hundred sixty-five thousand, six hundred eighty".