620156 has 12 divisors (see below), whose sum is σ = 1092168. Its totient is φ = 308112.

The previous prime is 620117. The next prime is 620159. The reversal of 620156 is 651026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620159) by changing a digit.

620156 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395 + ... + 1181.

It is an arithmetic number, because the mean of its divisors is an integer number (91014).

2⁶²⁰¹⁵⁶ is an apocalyptic number.

It is a pronic number, being equal to 787×788.

It is an amenable number.

620156 is a deficient number, since it is larger than the sum of its proper divisors (472012).

620156 is a wasteful number, since it uses less digits than its factorization.

620156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988 (or 986 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 620156 is about 787.4998412698. The cubic root of 620156 is about 85.2773409264.

The spelling of 620156 in words is "six hundred twenty thousand, one hundred fifty-six".