620444004 has 24 divisors (see below), whose sum is σ = 1449415968. Its totient is φ = 206569920.

The previous prime is 620443997. The next prime is 620444047. The reversal of 620444004 is 400444026.

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, 19882 + ... + 40449.

It is an arithmetic number, because the mean of its divisors is an integer number (60392332).

Almost surely, 2^620444004 is an apocalyptic number.

It is an amenable number.

620444004 is an abundant number, since it is smaller than the sum of its proper divisors (828971964).

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

620444004 is a wasteful number, since it uses less digits than its factorization.

620444004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61195 (or 61193 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 620444004 is about 24908.7134151887. The cubic root of 620444004 is about 852.9053997865.

The spelling of 620444004 in words is "six hundred twenty million, four hundred forty-four thousand, four".