642948360 has 32 divisors (see below), whose sum is σ = 1928845440. Its totient is φ = 171452864.

The previous prime is 642948349. The next prime is 642948389. The reversal of 642948360 is 63849246.

It is a happy number.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2678832 + ... + 2679071.

It is an arithmetic number, because the mean of its divisors is an integer number (60276420).

Almost surely, 2^642948360 is an apocalyptic number.

642948360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

642948360 is an abundant number, since it is smaller than the sum of its proper divisors (1285897080).

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

642948360 is a wasteful number, since it uses less digits than its factorization.

642948360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5357917 (or 5357913 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 642948360 is about 25356.4264043654. The cubic root of 642948360 is about 863.0951926206.

The spelling of 642948360 in words is "six hundred forty-two million, nine hundred forty-eight thousand, three hundred sixty".