749316646 has 16 divisors (see below), whose sum is σ = 1214723664. Its totient is φ = 344613024.

The previous prime is 749316577. The next prime is 749316649. The reversal of 749316646 is 646613947.

It is a happy number.

It is a super-2 number, since 2×749316646² = 1122950871945378632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 749316596 and 749316605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749316649) 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, 43561 + ... + 58276.

It is an arithmetic number, because the mean of its divisors is an integer number (75920229).

Almost surely, 2^749316646 is an apocalyptic number.

749316646 is a deficient number, since it is larger than the sum of its proper divisors (465407018).

749316646 is a wasteful number, since it uses less digits than its factorization.

749316646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102135.

The product of its digits is 653184, while the sum is 46.

The square root of 749316646 is about 27373.6487520389. The cubic root of 749316646 is about 908.2842710943.

The spelling of 749316646 in words is "seven hundred forty-nine million, three hundred sixteen thousand, six hundred forty-six".