672561339 has 4 divisors (see below), whose sum is σ = 896748456. Its totient is φ = 448374224.

The previous prime is 672561313. The next prime is 672561353. The reversal of 672561339 is 933165276.

672561339 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 672561339 - 2⁸ = 672561083 is a prime.

It is a super-3 number, since 3×672561339³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 672561339.

It is not an unprimeable number, because it can be changed into a prime (672566339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112093554 + ... + 112093559.

It is an arithmetic number, because the mean of its divisors is an integer number (224187114).

Almost surely, 2^672561339 is an apocalyptic number.

672561339 is a deficient number, since it is larger than the sum of its proper divisors (224187117).

672561339 is a wasteful number, since it uses less digits than its factorization.

672561339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224187116.

The product of its digits is 204120, while the sum is 42.

The square root of 672561339 is about 25933.7875945647. The cubic root of 672561339 is about 876.1476484827.

The spelling of 672561339 in words is "six hundred seventy-two million, five hundred sixty-one thousand, three hundred thirty-nine".