639232230400 has 297 divisors, whose sum is σ = 1678689764661. Its totient is φ = 241314324480.

The previous prime is 639232230367. The next prime is 639232230437. The reversal of 639232230400 is 4032232936.

The square root of 639232230400 is 799520.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 230123602944 + 409108627456 = 479712^2 + 639616^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2430540669 + ... + 2430540931.

Almost surely, 2^639232230400 is an apocalyptic number.

639232230400 is the 799520-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 639232230400

639232230400 is an abundant number, since it is smaller than the sum of its proper divisors (1039457534261).

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

639232230400 is an equidigital number, since it uses as much as digits as its factorization.

639232230400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 34.

The spelling of 639232230400 in words is "six hundred thirty-nine billion, two hundred thirty-two million, two hundred thirty thousand, four hundred".