627405904 has 20 divisors (see below), whose sum is σ = 1220650420. Its totient is φ = 312399360.

The previous prime is 627405901. The next prime is 627405907. The reversal of 627405904 is 409504726.

It is an interprime number because it is at equal distance from previous prime (627405901) and next prime (627405907).

It can be written as a sum of positive squares in 2 ways, for example, as 473149504 + 154256400 = 21752^2 + 12420^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (627405901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77499 + ... + 85210.

It is an arithmetic number, because the mean of its divisors is an integer number (61032521).

Almost surely, 2^627405904 is an apocalyptic number.

It is an amenable number.

627405904 is a deficient number, since it is larger than the sum of its proper divisors (593244516).

627405904 is a wasteful number, since it uses less digits than its factorization.

627405904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162958 (or 162952 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 627405904 is about 25048.0718619218. The cubic root of 627405904 is about 856.0836454204.

It can be divided in two parts, 62740 and 5904, that added together give a square (68644 = 262²).

The spelling of 627405904 in words is "six hundred twenty-seven million, four hundred five thousand, nine hundred four".