672665 has 8 divisors (see below), whose sum is σ = 922560. Its totient is φ = 461232.

The previous prime is 672653. The next prime is 672667. The reversal of 672665 is 566276.

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

It is a cyclic number.

It is not a de Polignac number, because 672665 - 2¹⁶ = 607129 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 672665.

It is not an unprimeable number, because it can be changed into a prime (672667) 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, 9575 + ... + 9644.

It is an arithmetic number, because the mean of its divisors is an integer number (115320).

2⁶⁷²⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

672665 is a deficient number, since it is larger than the sum of its proper divisors (249895).

672665 is a wasteful number, since it uses less digits than its factorization.

672665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19231.

The product of its digits is 15120, while the sum is 32.

The square root of 672665 is about 820.1615694484. The cubic root of 672665 is about 87.6192659334.

The spelling of 672665 in words is "six hundred seventy-two thousand, six hundred sixty-five".