749361664 has 20 divisors (see below), whose sum is σ = 1497260754. Its totient is φ = 374680576.

The previous prime is 749361661. The next prime is 749361673. The reversal of 749361664 is 466163947.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 728568064 + 20793600 = 26992^2 + 4560^2 .

It is not an unprimeable number, because it can be changed into a prime (749361661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 731287 + ... + 732310.

Almost surely, 2^749361664 is an apocalyptic number.

It is an amenable number.

749361664 is a deficient number, since it is larger than the sum of its proper divisors (747899090).

749361664 is an equidigital number, since it uses as much as digits as its factorization.

749361664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463615 (or 1463599 counting only the distinct ones).

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

The square root of 749361664 is about 27374.4710268527. The cubic root of 749361664 is about 908.3024602549.

The spelling of 749361664 in words is "seven hundred forty-nine million, three hundred sixty-one thousand, six hundred sixty-four".