620344 has 8 divisors (see below), whose sum is σ = 1163160. Its totient is φ = 310168.

The previous prime is 620329. The next prime is 620351. The reversal of 620344 is 443026.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38764 + ... + 38779.

It is an arithmetic number, because the mean of its divisors is an integer number (145395).

2⁶²⁰³⁴⁴ is an apocalyptic number.

It is an amenable number.

620344 is a deficient number, since it is larger than the sum of its proper divisors (542816).

620344 is a wasteful number, since it uses less digits than its factorization.

620344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77549 (or 77545 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 620344 is about 787.6191973283. The cubic root of 620344 is about 85.2859573177.

The spelling of 620344 in words is "six hundred twenty thousand, three hundred forty-four".