620379 has 28 divisors (see below), whose sum is σ = 996816. Its totient is φ = 384912.

The previous prime is 620377. The next prime is 620383. The reversal of 620379 is 973026.

620379 is a `hidden beast` number, since 620 + 37 + 9 = 666.

It is not a de Polignac number, because 620379 - 2¹ = 620377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (620377) 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 27 ways as a sum of consecutive naturals, for example, 16749 + ... + 16785.

2⁶²⁰³⁷⁹ is an apocalyptic number.

620379 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

620379 is a deficient number, since it is larger than the sum of its proper divisors (376437).

620379 is an equidigital number, since it uses as much as digits as its factorization.

620379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 620379 is about 787.6414158740. The cubic root of 620379 is about 85.2875612409.

It can be divided in two parts, 620 and 379, that added together give a palindrome (999).

The spelling of 620379 in words is "six hundred twenty thousand, three hundred seventy-nine".