620040 has 32 divisors (see below), whose sum is σ = 1860480. Its totient is φ = 165312.

The previous prime is 620033. The next prime is 620051. The reversal of 620040 is 40026.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 619998 and 620025.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2464 + ... + 2703.

It is an arithmetic number, because the mean of its divisors is an integer number (58140).

2⁶²⁰⁰⁴⁰ is an apocalyptic number.

620040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

620040 is an abundant number, since it is smaller than the sum of its proper divisors (1240440).

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

620040 is a wasteful number, since it uses less digits than its factorization.

620040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5181 (or 5177 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 620040 is about 787.4261870169. The cubic root of 620040 is about 85.2720235609.

Adding to 620040 its reverse (40026), we get a palindrome (660066).

The spelling of 620040 in words is "six hundred twenty thousand, forty".