627070681 has 2 divisors, whose sum is σ = 627070682. Its totient is φ = 627070680.

The previous prime is 627070627. The next prime is 627070711. The reversal of 627070681 is 186070726.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 388090000 + 238980681 = 19700^2 + 15459^2 .

It is a cyclic number.

It is not a de Polignac number, because 627070681 - 2⁷ = 627070553 is a prime.

It is a super-2 number, since 2×627070681² = 786435277939607522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 627070681.

It is not a weakly prime, because it can be changed into another prime (627070601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313535340 + 313535341.

It is an arithmetic number, because the mean of its divisors is an integer number (313535341).

Almost surely, 2^627070681 is an apocalyptic number.

It is an amenable number.

627070681 is a deficient number, since it is larger than the sum of its proper divisors (1).

627070681 is an equidigital number, since it uses as much as digits as its factorization.

627070681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 627070681 is about 25041.3793749466. The cubic root of 627070681 is about 855.9311497488.

The spelling of 627070681 in words is "six hundred twenty-seven million, seventy thousand, six hundred eighty-one".