627920669 has 4 divisors (see below), whose sum is σ = 636522396. Its totient is φ = 619318944.

The previous prime is 627920659. The next prime is 627920681. The reversal of 627920669 is 966029726.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 192155044 + 435765625 = 13862^2 + 20875^2 .

It is a cyclic number.

It is not a de Polignac number, because 627920669 - 2²⁴ = 611143453 is a prime.

It is a super-2 number, since 2×627920669² = 788568733114815122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (627920609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4300754 + ... + 4300899.

It is an arithmetic number, because the mean of its divisors is an integer number (159130599).

Almost surely, 2^627920669 is an apocalyptic number.

It is an amenable number.

627920669 is a deficient number, since it is larger than the sum of its proper divisors (8601727).

627920669 is an equidigital number, since it uses as much as digits as its factorization.

627920669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8601726.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 627920669 is about 25058.3452965275. The cubic root of 627920669 is about 856.3177104961.

The spelling of 627920669 in words is "six hundred twenty-seven million, nine hundred twenty thousand, six hundred sixty-nine".