627090381 has 12 divisors (see below), whose sum is σ = 906737052. Its totient is φ = 417626496.

The previous prime is 627090349. The next prime is 627090391. The reversal of 627090381 is 183090726.

627090381 is a `hidden beast` number, since 6 + 270 + 9 + 0 + 381 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 395015625 + 232074756 = 19875^2 + 15234^2 .

It is not a de Polignac number, because 627090381 - 2⁵ = 627090349 is a prime.

It is a super-2 number, since 2×627090381² = 786484691885450322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (627090301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26866 + ... + 44451.

It is an arithmetic number, because the mean of its divisors is an integer number (75561421).

Almost surely, 2^627090381 is an apocalyptic number.

It is an amenable number.

627090381 is a deficient number, since it is larger than the sum of its proper divisors (279646671).

627090381 is a wasteful number, since it uses less digits than its factorization.

627090381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72300 (or 72297 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 627090381 is about 25041.7727207959. The cubic root of 627090381 is about 855.9401129421.

The spelling of 627090381 in words is "six hundred twenty-seven million, ninety thousand, three hundred eighty-one".