672551 has 4 divisors (see below), whose sum is σ = 733704. Its totient is φ = 611400.

The previous prime is 672521. The next prime is 672557. The reversal of 672551 is 155276.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-672551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 672551.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 672551.

It is not an unprimeable number, because it can be changed into a prime (672557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30560 + ... + 30581.

It is an arithmetic number, because the mean of its divisors is an integer number (183426).

2⁶⁷²⁵⁵¹ is an apocalyptic number.

672551 is a deficient number, since it is larger than the sum of its proper divisors (61153).

672551 is a wasteful number, since it uses less digits than its factorization.

672551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61152.

The product of its digits is 2100, while the sum is 26.

The square root of 672551 is about 820.0920680021. The cubic root of 672551 is about 87.6143158911.

It can be divided in two parts, 6725 and 51, that added together give a palindrome (6776).

The spelling of 672551 in words is "six hundred seventy-two thousand, five hundred fifty-one".