620847 has 12 divisors (see below), whose sum is σ = 906984. Its totient is φ = 409200.

The previous prime is 620831. The next prime is 620849. The reversal of 620847 is 748026.

620847 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 620847 - 2⁴ = 620831 is a prime.

620847 is strictly pandigital in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 620847.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 620847.

It is not an unprimeable number, because it can be changed into a prime (620849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 568 + ... + 1250.

It is an arithmetic number, because the mean of its divisors is an integer number (75582).

2⁶²⁰⁸⁴⁷ is an apocalyptic number.

620847 is a deficient number, since it is larger than the sum of its proper divisors (286137).

620847 is a wasteful number, since it uses less digits than its factorization.

620847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790 (or 787 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 620847 is about 787.9384493728. The cubic root of 620847 is about 85.3090021913.

The spelling of 620847 in words is "six hundred twenty thousand, eight hundred forty-seven".