747860640 has 96 divisors (see below), whose sum is σ = 2458221696. Its totient is φ = 190755840.

The previous prime is 747860609. The next prime is 747860677. The reversal of 747860640 is 46068747.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×747860640² = 1118591073722419200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 747860592 and 747860601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22831 + ... + 44910.

It is an arithmetic number, because the mean of its divisors is an integer number (25606476).

Almost surely, 2^747860640 is an apocalyptic number.

It is an amenable number.

747860640 is an abundant number, since it is smaller than the sum of its proper divisors (1710361056).

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

747860640 is a wasteful number, since it uses less digits than its factorization.

747860640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67782 (or 67774 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 747860640 is about 27347.0407905499. The cubic root of 747860640 is about 907.6955903505.

The spelling of 747860640 in words is "seven hundred forty-seven million, eight hundred sixty thousand, six hundred forty".