620444002 has 16 divisors (see below), whose sum is σ = 987842520. Its totient is φ = 291253248.

The previous prime is 620443997. The next prime is 620444047. The reversal of 620444002 is 200444026.

It can be written as a sum of positive squares in 4 ways, for example, as 586559961 + 33884041 = 24219^2 + 5821^2 .

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, 8403 + ... + 36214.

Almost surely, 2^620444002 is an apocalyptic number.

620444002 is a deficient number, since it is larger than the sum of its proper divisors (367398518).

620444002 is a wasteful number, since it uses less digits than its factorization.

620444002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45045.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 620444002 is about 24908.7133750421. The cubic root of 620444002 is about 852.9053988701.

Adding to 620444002 its reverse (200444026), we get a palindrome (820888028).

The spelling of 620444002 in words is "six hundred twenty million, four hundred forty-four thousand, two".