639053100 has 324 divisors, whose sum is σ = 2391372984. Its totient is φ = 142248960.

The previous prime is 639053071. The next prime is 639053123. The reversal of 639053100 is 1350936.

It is a super-2 number, since 2×639053100² = 816777729239220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1896132 + ... + 1896468.

Almost surely, 2^639053100 is an apocalyptic number.

639053100 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 639053100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1195686492).

639053100 is an abundant number, since it is smaller than the sum of its proper divisors (1752319884).

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

639053100 is a wasteful number, since it uses less digits than its factorization.

639053100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 27.

The square root of 639053100 is about 25279.4995994778. The cubic root of 639053100 is about 861.3486591099.

The spelling of 639053100 in words is "six hundred thirty-nine million, fifty-three thousand, one hundred".