642702675 has 48 divisors (see below), whose sum is σ = 1111928832. Its totient is φ = 327225600.

The previous prime is 642702667. The next prime is 642702703. The reversal of 642702675 is 576207246.

It is a happy number.

It is not a de Polignac number, because 642702675 - 2³ = 642702667 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 142302 + ... + 146748.

It is an arithmetic number, because the mean of its divisors is an integer number (23165184).

Almost surely, 2^642702675 is an apocalyptic number.

642702675 is a deficient number, since it is larger than the sum of its proper divisors (469226157).

642702675 is a wasteful number, since it uses less digits than its factorization.

642702675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4548 (or 4543 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 642702675 is about 25351.5813116263. The cubic root of 642702675 is about 862.9852425992.

The spelling of 642702675 in words is "six hundred forty-two million, seven hundred two thousand, six hundred seventy-five".