620419 has 4 divisors (see below), whose sum is σ = 627480. Its totient is φ = 613360.

The previous prime is 620413. The next prime is 620429. The reversal of 620419 is 914026.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 914026 = 2 ⋅457013.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620419 is a prime.

It is a super-2 number, since 2×620419² = 769839471122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 620419.

It is not an unprimeable number, because it can be changed into a prime (620413) 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 3 ways as a sum of consecutive naturals, for example, 3397 + ... + 3574.

It is an arithmetic number, because the mean of its divisors is an integer number (156870).

2⁶²⁰⁴¹⁹ is an apocalyptic number.

620419 is a deficient number, since it is larger than the sum of its proper divisors (7061).

620419 is an equidigital number, since it uses as much as digits as its factorization.

620419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7060.

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

The square root of 620419 is about 787.6668077303. Note that the first 3 decimals coincide. The cubic root of 620419 is about 85.2893942221.

The spelling of 620419 in words is "six hundred twenty thousand, four hundred nineteen".