672671 has 4 divisors (see below), whose sum is σ = 675792. Its totient is φ = 669552.

The previous prime is 672667. The next prime is 672703. The reversal of 672671 is 176276.

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

It is a cyclic number.

It is not a de Polignac number, because 672671 - 2² = 672667 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1211 + ... + 1676.

It is an arithmetic number, because the mean of its divisors is an integer number (168948).

2⁶⁷²⁶⁷¹ is an apocalyptic number.

672671 is a deficient number, since it is larger than the sum of its proper divisors (3121).

672671 is a wasteful number, since it uses less digits than its factorization.

672671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3120.

The product of its digits is 3528, while the sum is 29.

The square root of 672671 is about 820.1652272561. The cubic root of 672671 is about 87.6195264465.

The spelling of 672671 in words is "six hundred seventy-two thousand, six hundred seventy-one".