620800642 has 32 divisors (see below), whose sum is σ = 1222087680. Its totient is φ = 229139280.

The previous prime is 620800633. The next prime is 620800657. The reversal of 620800642 is 246008026.

It is a super-2 number, since 2×620800642² = 770786874215224328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 620800642.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103158 + ... + 109009.

It is an arithmetic number, because the mean of its divisors is an integer number (38190240).

Almost surely, 2^620800642 is an apocalyptic number.

620800642 is a deficient number, since it is larger than the sum of its proper divisors (601287038).

620800642 is a wasteful number, since it uses less digits than its factorization.

620800642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212206.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 620800642 is about 24915.8712871936. The cubic root of 620800642 is about 853.0687882690.

Adding to 620800642 its reverse (246008026), we get a palindrome (866808668).

The spelling of 620800642 in words is "six hundred twenty million, eight hundred thousand, six hundred forty-two".