672577769 has 2 divisors, whose sum is σ = 672577770. Its totient is φ = 672577768.

The previous prime is 672577747. The next prime is 672577813. The reversal of 672577769 is 967775276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 450925225 + 221652544 = 21235^2 + 14888^2 .

It is a cyclic number.

It is not a de Polignac number, because 672577769 - 2²⁸ = 404142313 is a prime.

It is a super-2 number, since 2×672577769² = 904721710706034722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (672577729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336288884 + 336288885.

It is an arithmetic number, because the mean of its divisors is an integer number (336288885).

Almost surely, 2^672577769 is an apocalyptic number.

It is an amenable number.

672577769 is a deficient number, since it is larger than the sum of its proper divisors (1).

672577769 is an equidigital number, since it uses as much as digits as its factorization.

672577769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7779240, while the sum is 56.

The square root of 672577769 is about 25934.1043608604. The cubic root of 672577769 is about 876.1547828945.

The spelling of 672577769 in words is "six hundred seventy-two million, five hundred seventy-seven thousand, seven hundred sixty-nine".