619974 has 40 divisors (see below), whose sum is σ = 1437480. Its totient is φ = 199584.

The previous prime is 619967. The next prime is 619979. The reversal of 619974 is 479916.

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (619979) by changing a digit.

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 in 19 ways as a sum of consecutive naturals, for example, 6922 + ... + 7010.

It is an arithmetic number, because the mean of its divisors is an integer number (35937).

2⁶¹⁹⁹⁷⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 619974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (718740).

619974 is an abundant number, since it is smaller than the sum of its proper divisors (817506).

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

619974 is a wasteful number, since it uses less digits than its factorization.

619974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 137 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 619974 is about 787.3842772116. The cubic root of 619974 is about 85.2689978673.

It can be divided in two parts, 61997 and 4, that added together give a square (62001 = 249²).

The spelling of 619974 in words is "six hundred nineteen thousand, nine hundred seventy-four".