642480760 has 32 divisors (see below), whose sum is σ = 1449640800. Its totient is φ = 256270720.

The previous prime is 642480749. The next prime is 642480767. The reversal of 642480760 is 67084246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642480767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8011 + ... + 36730.

It is an arithmetic number, because the mean of its divisors is an integer number (45301275).

Almost surely, 2^642480760 is an apocalyptic number.

It is an amenable number.

642480760 is an abundant number, since it is smaller than the sum of its proper divisors (807160040).

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

642480760 is a wasteful number, since it uses less digits than its factorization.

642480760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45111 (or 45107 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 642480760 is about 25347.2041850773. The cubic root of 642480760 is about 862.8859061442.

The spelling of 642480760 in words is "six hundred forty-two million, four hundred eighty thousand, seven hundred sixty".