672595669 has 4 divisors (see below), whose sum is σ = 673513996. Its totient is φ = 671677344.

The previous prime is 672595661. The next prime is 672595733. The reversal of 672595669 is 966595276.

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 577825444 + 94770225 = 24038^2 + 9735^2 .

It is a cyclic number.

It is not a de Polignac number, because 672595669 - 2³ = 672595661 is a prime.

It is a super-2 number, since 2×672595669² = 904769867915115122, 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 (672595661) 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, 458064 + ... + 459529.

It is an arithmetic number, because the mean of its divisors is an integer number (168378499).

Almost surely, 2^672595669 is an apocalyptic number.

It is an amenable number.

672595669 is a deficient number, since it is larger than the sum of its proper divisors (918327).

672595669 is an equidigital number, since it uses as much as digits as its factorization.

672595669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918326.

The product of its digits is 6123600, while the sum is 55.

The square root of 672595669 is about 25934.4494639852. The cubic root of 672595669 is about 876.1625554933.

The spelling of 672595669 in words is "six hundred seventy-two million, five hundred ninety-five thousand, six hundred sixty-nine".