672613909 has 8 divisors (see below), whose sum is σ = 765663552. Its totient is φ = 584881440.

The previous prime is 672613883. The next prime is 672613933. The reversal of 672613909 is 909316276.

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

It is not a de Polignac number, because 672613909 - 2⁹ = 672613397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672613969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1329024 + ... + 1329529.

It is an arithmetic number, because the mean of its divisors is an integer number (95707944).

Almost surely, 2^672613909 is an apocalyptic number.

It is an amenable number.

672613909 is a deficient number, since it is larger than the sum of its proper divisors (93049643).

672613909 is a wasteful number, since it uses less digits than its factorization.

672613909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2658587.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 672613909 is about 25934.8011174175. The cubic root of 672613909 is about 876.1704755862.

The spelling of 672613909 in words is "six hundred seventy-two million, six hundred thirteen thousand, nine hundred nine".