620636 has 12 divisors (see below), whose sum is σ = 1150128. Its totient is φ = 292032.

The previous prime is 620623. The next prime is 620639. The reversal of 620636 is 636026.

620636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620639) 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, 4496 + ... + 4631.

It is an arithmetic number, because the mean of its divisors is an integer number (95844).

2⁶²⁰⁶³⁶ is an apocalyptic number.

It is an amenable number.

620636 is a deficient number, since it is larger than the sum of its proper divisors (529492).

620636 is a wasteful number, since it uses less digits than its factorization.

620636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9148 (or 9146 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 620636 is about 787.8045442875. The cubic root of 620636 is about 85.2993367723.

The spelling of 620636 in words is "six hundred twenty thousand, six hundred thirty-six".