749978064 has 60 divisors (see below), whose sum is σ = 2289710592. Its totient is φ = 227265600.

The previous prime is 749978063. The next prime is 749978081. The reversal of 749978064 is 460879947.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 749978064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749978063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235152 + ... + 238319.

Almost surely, 2^749978064 is an apocalyptic number.

It is an amenable number.

749978064 is an abundant number, since it is smaller than the sum of its proper divisors (1539732528).

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

749978064 is a wasteful number, since it uses less digits than its factorization.

749978064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473496 (or 473487 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The square root of 749978064 is about 27385.7273775958. The cubic root of 749978064 is about 908.5514384725.

The spelling of 749978064 in words is "seven hundred forty-nine million, nine hundred seventy-eight thousand, sixty-four".