642530496 has 112 divisors (see below), whose sum is σ = 1771741440. Its totient is φ = 205255680.

The previous prime is 642530491. The next prime is 642530509. The reversal of 642530496 is 694035246.

It is not an unprimeable number, because it can be changed into a prime (642530491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 929511 + ... + 930201.

It is an arithmetic number, because the mean of its divisors is an integer number (15819120).

Almost surely, 2^642530496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 642530496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (885870720).

642530496 is an abundant number, since it is smaller than the sum of its proper divisors (1129210944).

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

642530496 is a wasteful number, since it uses less digits than its factorization.

642530496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902 (or 892 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 642530496 is about 25348.1852604876. The cubic root of 642530496 is about 862.9081716027.

The spelling of 642530496 in words is "six hundred forty-two million, five hundred thirty thousand, four hundred ninety-six".