749945646 has 24 divisors (see below), whose sum is σ = 1629717024. Its totient is φ = 249238080.

The previous prime is 749945641. The next prime is 749945653. The reversal of 749945646 is 646549947.

It is a happy number.

749945646 is a `hidden beast` number, since 74 + 9 + 9 + 4 + 564 + 6 = 666.

749945646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 749945592 and 749945601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749945641) 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, 55750 + ... + 67881.

It is an arithmetic number, because the mean of its divisors is an integer number (67904876).

Almost surely, 2^749945646 is an apocalyptic number.

749945646 is an abundant number, since it is smaller than the sum of its proper divisors (879771378).

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

749945646 is a wasteful number, since it uses less digits than its factorization.

749945646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123976 (or 123973 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The square root of 749945646 is about 27385.1354935483. The cubic root of 749945646 is about 908.5383474919.

The spelling of 749945646 in words is "seven hundred forty-nine million, nine hundred forty-five thousand, six hundred forty-six".