627889648651 has 2 divisors, whose sum is σ = 627889648652. Its totient is φ = 627889648650.

The previous prime is 627889648591. The next prime is 627889648657. The reversal of 627889648651 is 156846988726.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 627889648651 - 2¹⁵ = 627889615883 is a prime.

It is a super-2 number, since 2×627889648651² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (627889648657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313944824325 + 313944824326.

It is an arithmetic number, because the mean of its divisors is an integer number (313944824326).

Almost surely, 2^627889648651 is an apocalyptic number.

627889648651 is a deficient number, since it is larger than the sum of its proper divisors (1).

627889648651 is an equidigital number, since it uses as much as digits as its factorization.

627889648651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 278691840, while the sum is 70.

The spelling of 627889648651 in words is "six hundred twenty-seven billion, eight hundred eighty-nine million, six hundred forty-eight thousand, six hundred fifty-one".