672291 has 6 divisors (see below), whose sum is σ = 971100. Its totient is φ = 448188.

The previous prime is 672289. The next prime is 672293. The reversal of 672291 is 192276.

It is an interprime number because it is at equal distance from previous prime (672289) and next prime (672293).

It is not a de Polignac number, because 672291 - 2¹ = 672289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (672293) 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 5 ways as a sum of consecutive naturals, for example, 37341 + ... + 37358.

It is an arithmetic number, because the mean of its divisors is an integer number (161850).

2⁶⁷²²⁹¹ is an apocalyptic number.

672291 is a deficient number, since it is larger than the sum of its proper divisors (298809).

672291 is a wasteful number, since it uses less digits than its factorization.

672291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74705 (or 74702 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 672291 is about 819.9335338916. The cubic root of 672291 is about 87.6030242279.

The spelling of 672291 in words is "six hundred seventy-two thousand, two hundred ninety-one".