642717496 has 16 divisors (see below), whose sum is σ = 1206343440. Its totient is φ = 321025920.

The previous prime is 642717479. The next prime is 642717499. The reversal of 642717496 is 694717246.

642717496 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642717499) 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, 33300 + ... + 48931.

It is an arithmetic number, because the mean of its divisors is an integer number (75396465).

Almost surely, 2^642717496 is an apocalyptic number.

It is an amenable number.

642717496 is a deficient number, since it is larger than the sum of its proper divisors (563625944).

642717496 is a wasteful number, since it uses less digits than its factorization.

642717496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83214 (or 83210 counting only the distinct ones).

The product of its digits is 508032, while the sum is 46.

The square root of 642717496 is about 25351.8736191233. The cubic root of 642717496 is about 862.9918761518.

The spelling of 642717496 in words is "six hundred forty-two million, seven hundred seventeen thousand, four hundred ninety-six".