639248160 has 192 divisors, whose sum is σ = 2193609600. Its totient is φ = 155860992.

The previous prime is 639248153. The next prime is 639248173. The reversal of 639248160 is 61842936.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 263272 + ... + 265688.

It is an arithmetic number, because the mean of its divisors is an integer number (11425050).

Almost surely, 2^639248160 is an apocalyptic number.

639248160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 639248160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1096804800).

639248160 is an abundant number, since it is smaller than the sum of its proper divisors (1554361440).

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

639248160 is a wasteful number, since it uses less digits than its factorization.

639248160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2483 (or 2475 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 639248160 is about 25283.3573719947. The cubic root of 639248160 is about 861.4362874972.

The spelling of 639248160 in words is "six hundred thirty-nine million, two hundred forty-eight thousand, one hundred sixty".