620684 has 6 divisors (see below), whose sum is σ = 1086204. Its totient is φ = 310340.

The previous prime is 620671. The next prime is 620689. The reversal of 620684 is 486026.

It is not an unprimeable number, because it can be changed into a prime (620689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77582 + ... + 77589.

It is an arithmetic number, because the mean of its divisors is an integer number (181034).

2⁶²⁰⁶⁸⁴ is an apocalyptic number.

It is an amenable number.

620684 is a deficient number, since it is larger than the sum of its proper divisors (465520).

620684 is a wasteful number, since it uses less digits than its factorization.

620684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155175 (or 155173 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 620684 is about 787.8350081077. The cubic root of 620684 is about 85.3015357331.

The spelling of 620684 in words is "six hundred twenty thousand, six hundred eighty-four".