672281 has 8 divisors (see below), whose sum is σ = 696384. Its totient is φ = 648720.

The previous prime is 672271. The next prime is 672283. The reversal of 672281 is 182276.

672281 = 20² + 21² + ... + 126².

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

It is a cyclic number.

It is not a de Polignac number, because 672281 - 2¹⁰ = 671257 is a prime.

It is a super-2 number, since 2×672281² = 903923485922, which contains 22 as substring.

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 672281.

It is not an unprimeable number, because it can be changed into a prime (672283) 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 7 ways as a sum of consecutive naturals, for example, 6230 + ... + 6336.

It is an arithmetic number, because the mean of its divisors is an integer number (87048).

2⁶⁷²²⁸¹ is an apocalyptic number.

672281 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

672281 is a deficient number, since it is larger than the sum of its proper divisors (24103).

672281 is a wasteful number, since it uses less digits than its factorization.

672281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271.

The product of its digits is 1344, while the sum is 26.

The square root of 672281 is about 819.9274358137. The cubic root of 672281 is about 87.6025898750.

The spelling of 672281 in words is "six hundred seventy-two thousand, two hundred eighty-one".