672589309 has 8 divisors (see below), whose sum is σ = 813889728. Its totient is φ = 542592960.

The previous prime is 672589301. The next prime is 672589339. The reversal of 672589309 is 903985276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 672589309 - 2³ = 672589301 is a prime.

It is a super-3 number, since 3×672589309³ (a number of 27 digits) contains 333 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 (672589301) 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 7 ways as a sum of consecutive naturals, for example, 2825887 + ... + 2826124.

It is an arithmetic number, because the mean of its divisors is an integer number (101736216).

Almost surely, 2^672589309 is an apocalyptic number.

It is an amenable number.

672589309 is a deficient number, since it is larger than the sum of its proper divisors (141300419).

672589309 is a wasteful number, since it uses less digits than its factorization.

672589309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5652035.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 672589309 is about 25934.3268468646. The cubic root of 672589309 is about 876.1597938483.

It can be divided in two parts, 67258 and 9309, that added together give a palindrome (76567).

The spelling of 672589309 in words is "six hundred seventy-two million, five hundred eighty-nine thousand, three hundred nine".