745680444 has 12 divisors (see below), whose sum is σ = 1739921064. Its totient is φ = 248560144.

The previous prime is 745680437. The next prime is 745680457. The reversal of 745680444 is 444086547.

745680444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 745680396 and 745680405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31070007 + ... + 31070030.

It is an arithmetic number, because the mean of its divisors is an integer number (144993422).

Almost surely, 2^745680444 is an apocalyptic number.

It is an amenable number.

745680444 is an abundant number, since it is smaller than the sum of its proper divisors (994240620).

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

745680444 is a wasteful number, since it uses less digits than its factorization.

745680444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62140044 (or 62140042 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 42.

The square root of 745680444 is about 27307.1500526877. The cubic root of 745680444 is about 906.8126805521.

The spelling of 745680444 in words is "seven hundred forty-five million, six hundred eighty thousand, four hundred forty-four".