672657 has 8 divisors (see below), whose sum is σ = 944160. Its totient is φ = 424800.

The previous prime is 672653. The next prime is 672667. The reversal of 672657 is 756276.

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

It is not a de Polignac number, because 672657 - 2² = 672653 is a prime.

It is an Ulam number.

672657 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 672657.

It is not an unprimeable number, because it can be changed into a prime (672653) 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, 5844 + ... + 5957.

It is an arithmetic number, because the mean of its divisors is an integer number (118020).

2⁶⁷²⁶⁵⁷ is an apocalyptic number.

It is an amenable number.

672657 is a deficient number, since it is larger than the sum of its proper divisors (271503).

672657 is a wasteful number, since it uses less digits than its factorization.

672657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11823.

The product of its digits is 17640, while the sum is 33.

The square root of 672657 is about 820.1566923460. The cubic root of 672657 is about 87.6189185803.

The spelling of 672657 in words is "six hundred seventy-two thousand, six hundred fifty-seven".