624380 has 12 divisors (see below), whose sum is σ = 1311240. Its totient is φ = 249744.

The previous prime is 624347. The next prime is 624391. The reversal of 624380 is 83426.

624380 = T₂₁₆ + T₂₁₇ + ... + T₂₃₉.

It is a happy number.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

624380 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15590 + ... + 15629.

It is an arithmetic number, because the mean of its divisors is an integer number (109270).

2⁶²⁴³⁸⁰ is an apocalyptic number.

It is an amenable number.

624380 is an abundant number, since it is smaller than the sum of its proper divisors (686860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

624380 is a wasteful number, since it uses less digits than its factorization.

624380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31228 (or 31226 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 624380 is about 790.1771953176. The cubic root of 624380 is about 85.4705163779.

Adding to 624380 its sum of digits (23), we get a triangular number (624403 = T₁₁₁₇).

The spelling of 624380 in words is "six hundred twenty-four thousand, three hundred eighty".