672866 has 8 divisors (see below), whose sum is σ = 1062480. Its totient is φ = 318708.

The previous prime is 672863. The next prime is 672869. The reversal of 672866 is 668276.

672866 = 54² + 55² + ... + 129².

It is an interprime number because it is at equal distance from previous prime (672863) and next prime (672869).

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

It is a Curzon number.

It is a plaindrome in base 9.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 672866.

It is not an unprimeable number, because it can be changed into a prime (672863) 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 3 ways as a sum of consecutive naturals, for example, 8816 + ... + 8891.

It is an arithmetic number, because the mean of its divisors is an integer number (132810).

2⁶⁷²⁸⁶⁶ is an apocalyptic number.

672866 is a deficient number, since it is larger than the sum of its proper divisors (389614).

672866 is a wasteful number, since it uses less digits than its factorization.

672866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17728.

The product of its digits is 24192, while the sum is 35.

The square root of 672866 is about 820.2840971273. The cubic root of 672866 is about 87.6279922774.

The spelling of 672866 in words is "six hundred seventy-two thousand, eight hundred sixty-six".