625984 has 14 divisors (see below), whose sum is σ = 1242314. Its totient is φ = 312960.

The previous prime is 625979. The next prime is 625997. The reversal of 625984 is 489526.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 518400 + 107584 = 720^2 + 328^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4827 + ... + 4954.

2⁶²⁵⁹⁸⁴ is an apocalyptic number.

625984 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

625984 is a deficient number, since it is larger than the sum of its proper divisors (616330).

625984 is an equidigital number, since it uses as much as digits as its factorization.

625984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9793 (or 9783 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 625984 is about 791.1915065267. The cubic root of 625984 is about 85.5436435756.

The spelling of 625984 in words is "six hundred twenty-five thousand, nine hundred eighty-four".