672651 has 16 divisors (see below), whose sum is σ = 1139200. Its totient is φ = 384264.

The previous prime is 672643. The next prime is 672653. The reversal of 672651 is 156276.

672651 is a `hidden beast` number, since 6 + 7 + 2 + 651 = 666.

It is not a de Polignac number, because 672651 - 2³ = 672643 is a prime.

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

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 672651.

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 15 ways as a sum of consecutive naturals, for example, 1591 + ... + 1968.

It is an arithmetic number, because the mean of its divisors is an integer number (71200).

2⁶⁷²⁶⁵¹ is an apocalyptic number.

672651 is a deficient number, since it is larger than the sum of its proper divisors (466549).

672651 is a wasteful number, since it uses less digits than its factorization.

672651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3575 (or 3569 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 672651 is about 820.1530345003. The cubic root of 672651 is about 87.6186580636.

The spelling of 672651 in words is "six hundred seventy-two thousand, six hundred fifty-one".