672490669 has 2 divisors, whose sum is σ = 672490670. Its totient is φ = 672490668.

The previous prime is 672490661. The next prime is 672490681. The reversal of 672490669 is 966094276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 483428169 + 189062500 = 21987^2 + 13750^2 .

It is a cyclic number.

It is not a de Polignac number, because 672490669 - 2³ = 672490661 is a prime.

It is a super-2 number, since 2×672490669² = 904487399784135122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672490661) 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 as a sum of consecutive naturals, namely, 336245334 + 336245335.

It is an arithmetic number, because the mean of its divisors is an integer number (336245335).

Almost surely, 2^672490669 is an apocalyptic number.

It is an amenable number.

672490669 is a deficient number, since it is larger than the sum of its proper divisors (1).

672490669 is an equidigital number, since it uses as much as digits as its factorization.

672490669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 672490669 is about 25932.4250505039. The cubic root of 672490669 is about 876.1169600684.

The spelling of 672490669 in words is "six hundred seventy-two million, four hundred ninety thousand, six hundred sixty-nine".