620206646 has 16 divisors (see below), whose sum is σ = 971118720. Its totient is φ = 296725440.

The previous prime is 620206637. The next prime is 620206649. The reversal of 620206646 is 646602026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620206649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50681 + ... + 61716.

It is an arithmetic number, because the mean of its divisors is an integer number (60694920).

Almost surely, 2^620206646 is an apocalyptic number.

620206646 is a deficient number, since it is larger than the sum of its proper divisors (350912074).

620206646 is a wasteful number, since it uses less digits than its factorization.

620206646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112519.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 620206646 is about 24903.9484018097. The cubic root of 620206646 is about 852.7966229859.

The spelling of 620206646 in words is "six hundred twenty million, two hundred six thousand, six hundred forty-six".