642590750 has 16 divisors (see below), whose sum is σ = 1202930352. Its totient is φ = 257036200.

The previous prime is 642590699. The next prime is 642590777. The reversal of 642590750 is 57095246.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1284932 + ... + 1285431.

It is an arithmetic number, because the mean of its divisors is an integer number (75183147).

Almost surely, 2^642590750 is an apocalyptic number.

642590750 is a deficient number, since it is larger than the sum of its proper divisors (560339602).

642590750 is a wasteful number, since it uses less digits than its factorization.

642590750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570380 (or 2570370 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 642590750 is about 25349.3737595231. The cubic root of 642590750 is about 862.9351441455.

The spelling of 642590750 in words is "six hundred forty-two million, five hundred ninety thousand, seven hundred fifty".