646374106 has 32 divisors (see below), whose sum is σ = 1157914368. Its totient is φ = 264591360.

The previous prime is 646374077. The next prime is 646374133. The reversal of 646374106 is 601473646.

646374106 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 370396 + ... + 372136.

It is an arithmetic number, because the mean of its divisors is an integer number (36184824).

Almost surely, 2^646374106 is an apocalyptic number.

646374106 is a deficient number, since it is larger than the sum of its proper divisors (511540262).

646374106 is a wasteful number, since it uses less digits than its factorization.

646374106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2926.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 646374106 is about 25423.8884909449. Note that the first 3 decimals coincide. The cubic root of 646374106 is about 864.6253875882.

The spelling of 646374106 in words is "six hundred forty-six million, three hundred seventy-four thousand, one hundred six".