620019 has 6 divisors (see below), whose sum is σ = 895596. Its totient is φ = 413340.

The previous prime is 620003. The next prime is 620029. The reversal of 620019 is 910026.

It is not a de Polignac number, because 620019 - 2⁴ = 620003 is a prime.

It is a super-2 number, since 2×620019² = 768847120722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 619983 and 620010.

It is not an unprimeable number, because it can be changed into a prime (620029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34437 + ... + 34454.

It is an arithmetic number, because the mean of its divisors is an integer number (149266).

2⁶²⁰⁰¹⁹ is an apocalyptic number.

620019 is a deficient number, since it is larger than the sum of its proper divisors (275577).

620019 is a wasteful number, since it uses less digits than its factorization.

620019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68897 (or 68894 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 620019 is about 787.4128523208. The cubic root of 620019 is about 85.2710608635.

It can be divided in two parts, 62001 and 9, that multiplied together give a square (558009 = 747²).

The spelling of 620019 in words is "six hundred twenty thousand, nineteen".