627231990 has 256 divisors, whose sum is σ = 2043740160. Its totient is φ = 119232000.

The previous prime is 627231937. The next prime is 627231991. The reversal of 627231990 is 99132726.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (627231991) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1360360 + ... + 1360820.

It is an arithmetic number, because the mean of its divisors is an integer number (7983360).

Almost surely, 2^627231990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 627231990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1021870080).

627231990 is an abundant number, since it is smaller than the sum of its proper divisors (1416508170).

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

627231990 is a wasteful number, since it uses less digits than its factorization.

627231990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 627231990 is about 25044.6000167701. The cubic root of 627231990 is about 856.0045373082.

The spelling of 627231990 in words is "six hundred twenty-seven million, two hundred thirty-one thousand, nine hundred ninety".