672057 has 10 divisors (see below), whose sum is σ = 1004058. Its totient is φ = 447984.

The previous prime is 672043. The next prime is 672059. The reversal of 672057 is 750276.

It can be written as a sum of positive squares in only one way, i.e., 670761 + 1296 = 819^2 + 36^2 .

It is not a de Polignac number, because 672057 - 2⁴ = 672041 is a prime.

It is a super-2 number, since 2×672057² = 903321222498, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

672057 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 672057.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 672057.

It is not an unprimeable number, because it can be changed into a prime (672059) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4068 + ... + 4229.

2⁶⁷²⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

672057 is a deficient number, since it is larger than the sum of its proper divisors (332001).

672057 is an equidigital number, since it uses as much as digits as its factorization.

672057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8309 (or 8300 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 672057 is about 819.7908269797. The cubic root of 672057 is about 87.5928592415.

The spelling of 672057 in words is "six hundred seventy-two thousand, fifty-seven".