747640672 has 48 divisors (see below), whose sum is σ = 1508310720. Its totient is φ = 364687488.

The previous prime is 747640661. The next prime is 747640679. The reversal of 747640672 is 276046747.

It is a super-3 number, since 3×747640672³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747640679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227779 + ... + 231037.

It is an arithmetic number, because the mean of its divisors is an integer number (31423140).

Almost surely, 2^747640672 is an apocalyptic number.

It is an amenable number.

747640672 is an abundant number, since it is smaller than the sum of its proper divisors (760670048).

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

747640672 is a wasteful number, since it uses less digits than its factorization.

747640672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3443 (or 3435 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 43.

The square root of 747640672 is about 27343.0187067924. The cubic root of 747640672 is about 907.6065882237.

The spelling of 747640672 in words is "seven hundred forty-seven million, six hundred forty thousand, six hundred seventy-two".