620836 has 6 divisors (see below), whose sum is σ = 1086470. Its totient is φ = 310416.

The previous prime is 620831. The next prime is 620849. The reversal of 620836 is 638026.

It can be written as a sum of positive squares in only one way, i.e., 324900 + 295936 = 570^2 + 544^2 .

It is a plaindrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 620836.

It is not an unprimeable number, because it can be changed into a prime (620831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77601 + ... + 77608.

2⁶²⁰⁸³⁶ is an apocalyptic number.

It is an amenable number.

620836 is a deficient number, since it is larger than the sum of its proper divisors (465634).

620836 is a wasteful number, since it uses less digits than its factorization.

620836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155213 (or 155211 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 620836 is about 787.9314691012. The cubic root of 620836 is about 85.3084983610.

The spelling of 620836 in words is "six hundred twenty thousand, eight hundred thirty-six".