624387 has 4 divisors (see below), whose sum is σ = 832520. Its totient is φ = 416256.

The previous prime is 624347. The next prime is 624391. The reversal of 624387 is 783426.

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

It is not a de Polignac number, because 624387 - 2⁷ = 624259 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (624347) 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, 104062 + ... + 104067.

It is an arithmetic number, because the mean of its divisors is an integer number (208130).

2⁶²⁴³⁸⁷ is an apocalyptic number.

624387 is a deficient number, since it is larger than the sum of its proper divisors (208133).

624387 is a wasteful number, since it uses less digits than its factorization.

624387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208132.

The product of its digits is 8064, while the sum is 30.

The square root of 624387 is about 790.1816246914. The cubic root of 624387 is about 85.4708357835.

The spelling of 624387 in words is "six hundred twenty-four thousand, three hundred eighty-seven".