624291 has 8 divisors (see below), whose sum is σ = 881424. Its totient is φ = 391680.

The previous prime is 624277. The next prime is 624311. The reversal of 624291 is 192426.

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

It is not a de Polignac number, because 624291 - 2⁵ = 624259 is a prime.

It is an Ulam number.

624291 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (624241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6070 + ... + 6171.

It is an arithmetic number, because the mean of its divisors is an integer number (110178).

2⁶²⁴²⁹¹ is an apocalyptic number.

624291 is a deficient number, since it is larger than the sum of its proper divisors (257133).

624291 is a wasteful number, since it uses less digits than its factorization.

624291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12261.

The product of its digits is 864, while the sum is 24.

The square root of 624291 is about 790.1208768283. The cubic root of 624291 is about 85.4664551559.

The spelling of 624291 in words is "six hundred twenty-four thousand, two hundred ninety-one".