672487 has 4 divisors (see below), whose sum is σ = 679120. Its totient is φ = 665856.

The previous prime is 672473. The next prime is 672493. The reversal of 672487 is 784276.

672487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a 8-Lehmer number, since φ(672487) divides (672487-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 672487 - 2¹⁵ = 639719 is a prime.

It is a Duffinian number.

672487 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672587) 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, 3162 + ... + 3367.

It is an arithmetic number, because the mean of its divisors is an integer number (169780).

It is a Poulet number, since it divides 2⁶⁷²⁴⁸⁶-1.

2⁶⁷²⁴⁸⁷ is an apocalyptic number.

672487 is a deficient number, since it is larger than the sum of its proper divisors (6633).

672487 is a wasteful number, since it uses less digits than its factorization.

672487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6632.

The product of its digits is 18816, while the sum is 34.

The square root of 672487 is about 820.0530470646. The cubic root of 672487 is about 87.6115366748.

The spelling of 672487 in words is "six hundred seventy-two thousand, four hundred eighty-seven".