624671 has 4 divisors (see below), whose sum is σ = 641592. Its totient is φ = 607752.

The previous prime is 624667. The next prime is 624683. The reversal of 624671 is 176426.

624671 is nontrivially palindromic in base 7.

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 624671 - 2² = 624667 is a prime.

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 624671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624601) 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, 8405 + ... + 8478.

It is an arithmetic number, because the mean of its divisors is an integer number (160398).

2⁶²⁴⁶⁷¹ is an apocalyptic number.

624671 is a deficient number, since it is larger than the sum of its proper divisors (16921).

624671 is a wasteful number, since it uses less digits than its factorization.

624671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16920.

The product of its digits is 2016, while the sum is 26.

The square root of 624671 is about 790.3613097818. The cubic root of 624671 is about 85.4837925117.

The spelling of 624671 in words is "six hundred twenty-four thousand, six hundred seventy-one".