672001 has 4 divisors (see below), whose sum is σ = 733104. Its totient is φ = 610900.

The previous prime is 671999. The next prime is 672019. The reversal of 672001 is 100276.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 672001 - 2¹ = 671999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30535 + ... + 30556.

It is an arithmetic number, because the mean of its divisors is an integer number (183276).

2⁶⁷²⁰⁰¹ is an apocalyptic number.

It is an amenable number.

672001 is a deficient number, since it is larger than the sum of its proper divisors (61103).

672001 is a wasteful number, since it uses less digits than its factorization.

672001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61102.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 672001 is about 819.7566712141. The cubic root of 672001 is about 87.5904262453.

Adding to 672001 its reverse (100276), we get a palindrome (772277).

The spelling of 672001 in words is "six hundred seventy-two thousand, one".