745560972 has 144 divisors (see below), whose sum is σ = 2085385120. Its totient is φ = 223202304.

The previous prime is 745560967. The next prime is 745560997. The reversal of 745560972 is 279065547.

745560972 is a `hidden beast` number, since 7 + 4 + 556 + 0 + 97 + 2 = 666.

It is a super-2 number, since 2×745560972² = 1111722325939169568, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4748718 + ... + 4748874.

Almost surely, 2^745560972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745560972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1042692560).

745560972 is an abundant number, since it is smaller than the sum of its proper divisors (1339824148).

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

745560972 is a wasteful number, since it uses less digits than its factorization.

745560972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The square root of 745560972 is about 27304.9624061268. The cubic root of 745560972 is about 906.7642484961.

The spelling of 745560972 in words is "seven hundred forty-five million, five hundred sixty thousand, nine hundred seventy-two".