624290 has 16 divisors (see below), whose sum is σ = 1133568. Its totient is φ = 247536.

The previous prime is 624277. The next prime is 624311. The reversal of 624290 is 92426.

It is an unprimeable number.

624290 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1439 + ... + 1821.

It is an arithmetic number, because the mean of its divisors is an integer number (70848).

2⁶²⁴²⁹⁰ is an apocalyptic number.

624290 is a deficient number, since it is larger than the sum of its proper divisors (509278).

624290 is a wasteful number, since it uses less digits than its factorization.

624290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 624290 is about 790.1202440135. The cubic root of 624290 is about 85.4664095220.

The spelling of 624290 in words is "six hundred twenty-four thousand, two hundred ninety".