619944 has 32 divisors (see below), whose sum is σ = 1669920. Its totient is φ = 190656.

The previous prime is 619921. The next prime is 619967. The reversal of 619944 is 449916.

619944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (619921) and next prime (619967).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682 + ... + 1305.

It is an arithmetic number, because the mean of its divisors is an integer number (52185).

2⁶¹⁹⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

619944 is an abundant number, since it is smaller than the sum of its proper divisors (1049976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

619944 is a wasteful number, since it uses less digits than its factorization.

619944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009 (or 2005 counting only the distinct ones).

The product of its digits is 7776, while the sum is 33.

The square root of 619944 is about 787.3652265626. The cubic root of 619944 is about 85.2676224810.

The spelling of 619944 in words is "six hundred nineteen thousand, nine hundred forty-four".