642288580 has 24 divisors (see below), whose sum is σ = 1349332992. Its totient is φ = 256815072.

The previous prime is 642288571. The next prime is 642288583. The reversal of 642288580 is 85882246.

It is not an unprimeable number, because it can be changed into a prime (642288583) 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, 67179 + ... + 76141.

It is an arithmetic number, because the mean of its divisors is an integer number (56222208).

Almost surely, 2^642288580 is an apocalyptic number.

It is an amenable number.

642288580 is an abundant number, since it is smaller than the sum of its proper divisors (707044412).

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

642288580 is a wasteful number, since it uses less digits than its factorization.

642288580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12555 (or 12553 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 43.

The square root of 642288580 is about 25343.4129509030. The cubic root of 642288580 is about 862.7998615699.

The spelling of 642288580 in words is "six hundred forty-two million, two hundred eighty-eight thousand, five hundred eighty".