642580762 has 16 divisors (see below), whose sum is σ = 1011003840. Its totient is φ = 305724672.

The previous prime is 642580733. The next prime is 642580781. The reversal of 642580762 is 267085246.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 27312 + ... + 45067.

It is an arithmetic number, because the mean of its divisors is an integer number (63187740).

Almost surely, 2^642580762 is an apocalyptic number.

642580762 is a deficient number, since it is larger than the sum of its proper divisors (368423078).

642580762 is a wasteful number, since it uses less digits than its factorization.

642580762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72597.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 642580762 is about 25349.1767519184. The cubic root of 642580762 is about 862.9306731604.

The spelling of 642580762 in words is "six hundred forty-two million, five hundred eighty thousand, seven hundred sixty-two".