672775 has 12 divisors (see below), whose sum is σ = 883872. Its totient is φ = 506240.

The previous prime is 672767. The next prime is 672779. The reversal of 672775 is 577276.

It is not a de Polignac number, because 672775 - 2³ = 672767 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 672775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 367 + ... + 1216.

It is an arithmetic number, because the mean of its divisors is an integer number (73656).

2⁶⁷²⁷⁷⁵ is an apocalyptic number.

672775 is a deficient number, since it is larger than the sum of its proper divisors (211097).

672775 is a wasteful number, since it uses less digits than its factorization.

672775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610 (or 1605 counting only the distinct ones).

The product of its digits is 20580, while the sum is 34.

The square root of 672775 is about 820.2286266645. The cubic root of 672775 is about 87.6240417599.

The spelling of 672775 in words is "six hundred seventy-two thousand, seven hundred seventy-five".