627189140 has 12 divisors (see below), whose sum is σ = 1317097236. Its totient is φ = 250875648.

The previous prime is 627189089. The next prime is 627189149. The reversal of 627189140 is 41981726.

It can be written as a sum of positive squares in 2 ways, for example, as 436141456 + 191047684 = 20884^2 + 13822^2 .

It is a junction number, because it is equal to n+sod(n) for n = 627189094 and 627189103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (627189149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15679709 + ... + 15679748.

It is an arithmetic number, because the mean of its divisors is an integer number (109758103).

Almost surely, 2^627189140 is an apocalyptic number.

It is an amenable number.

627189140 is an abundant number, since it is smaller than the sum of its proper divisors (689908096).

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

627189140 is a wasteful number, since it uses less digits than its factorization.

627189140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31359466 (or 31359464 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 627189140 is about 25043.7445283248. The cubic root of 627189140 is about 855.9850439201.

The spelling of 627189140 in words is "six hundred twenty-seven million, one hundred eighty-nine thousand, one hundred forty".