750640668 has 12 divisors (see below), whose sum is σ = 1751494920. Its totient is φ = 250213552.

The previous prime is 750640663. The next prime is 750640679. The reversal of 750640668 is 866046057.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×750640668² = 1126922824910972448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (750640663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31276683 + ... + 31276706.

It is an arithmetic number, because the mean of its divisors is an integer number (145957910).

Almost surely, 2^750640668 is an apocalyptic number.

It is an amenable number.

750640668 is an abundant number, since it is smaller than the sum of its proper divisors (1000854252).

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

750640668 is a wasteful number, since it uses less digits than its factorization.

750640668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62553396 (or 62553394 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 750640668 is about 27397.8223222212. The cubic root of 750640668 is about 908.8189274573.

The spelling of 750640668 in words is "seven hundred fifty million, six hundred forty thousand, six hundred sixty-eight".