747980644 has 24 divisors (see below), whose sum is σ = 1367271360. Its totient is φ = 357582624.

The previous prime is 747980627. The next prime is 747980647. The reversal of 747980644 is 446089747.

It is not an unprimeable number, because it can be changed into a prime (747980647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19354 + ... + 43249.

It is an arithmetic number, because the mean of its divisors is an integer number (56969640).

Almost surely, 2^747980644 is an apocalyptic number.

It is an amenable number.

747980644 is a deficient number, since it is larger than the sum of its proper divisors (619290716).

747980644 is a wasteful number, since it uses less digits than its factorization.

747980644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62739 (or 62737 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 49.

The square root of 747980644 is about 27349.2347973394. The cubic root of 747980644 is about 907.7441382884.

The spelling of 747980644 in words is "seven hundred forty-seven million, nine hundred eighty thousand, six hundred forty-four".