742656764 has 12 divisors (see below), whose sum is σ = 1376099424. Its totient is φ = 349485504.

The previous prime is 742656763. The next prime is 742656767. The reversal of 742656764 is 467656247.

It is a super-2 number, since 2×742656764² = 1103078138229903392, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742656763) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5460644 + ... + 5460779.

It is an arithmetic number, because the mean of its divisors is an integer number (114674952).

Almost surely, 2^742656764 is an apocalyptic number.

It is an amenable number.

742656764 is a deficient number, since it is larger than the sum of its proper divisors (633442660).

742656764 is a wasteful number, since it uses less digits than its factorization.

742656764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10921444 (or 10921442 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 47.

The square root of 742656764 is about 27251.7295597912. The cubic root of 742656764 is about 905.5853336176.

The spelling of 742656764 in words is "seven hundred forty-two million, six hundred fifty-six thousand, seven hundred sixty-four".