620606444 has 24 divisors (see below), whose sum is σ = 1113604800. Its totient is φ = 302463504.

The previous prime is 620606429. The next prime is 620606449. The reversal of 620606444 is 444606026.

It is a self number, because there is not a number n which added to its sum of digits gives 620606444.

It is not an unprimeable number, because it can be changed into a prime (620606449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86507 + ... + 93405.

It is an arithmetic number, because the mean of its divisors is an integer number (46400200).

Almost surely, 2^620606444 is an apocalyptic number.

It is an amenable number.

620606444 is a deficient number, since it is larger than the sum of its proper divisors (492998356).

620606444 is a wasteful number, since it uses less digits than its factorization.

620606444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7469 (or 7467 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 620606444 is about 24911.9739081430. The cubic root of 620606444 is about 852.9798270585.

The spelling of 620606444 in words is "six hundred twenty million, six hundred six thousand, four hundred forty-four".