619420 has 12 divisors (see below), whose sum is σ = 1300824. Its totient is φ = 247760.

The previous prime is 619397. The next prime is 619471. The reversal of 619420 is 24916.

It is a super-2 number, since 2×619420² = 767362272800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 619391 and 619400.

It is a congruent number.

It is an unprimeable number.

619420 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 in 3 ways as a sum of consecutive naturals, for example, 15466 + ... + 15505.

It is an arithmetic number, because the mean of its divisors is an integer number (108402).

2⁶¹⁹⁴²⁰ is an apocalyptic number.

It is an amenable number.

619420 is an abundant number, since it is smaller than the sum of its proper divisors (681404).

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

619420 is a wasteful number, since it uses less digits than its factorization.

619420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30980 (or 30978 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 619420 is about 787.0324008578. The cubic root of 619420 is about 85.2435919080.

The spelling of 619420 in words is "six hundred nineteen thousand, four hundred twenty".