620064 has 36 divisors (see below), whose sum is σ = 1764126. Its totient is φ = 206592.

The previous prime is 620051. The next prime is 620099. The reversal of 620064 is 460026.

It can be written as a sum of positive squares in only one way, i.e., 608400 + 11664 = 780^2 + 108^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 16.

It is an unprimeable number.

620064 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 789 + ... + 1364.

2⁶²⁰⁰⁶⁴ is an apocalyptic number.

It is an amenable number.

620064 is an abundant number, since it is smaller than the sum of its proper divisors (1144062).

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

620064 is a wasteful number, since it uses less digits than its factorization.

620064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169 (or 2158 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 620064 is about 787.4414263931. The cubic root of 620064 is about 85.2731237599.

The spelling of 620064 in words is "six hundred twenty thousand, sixty-four".