646368662 has 16 divisors (see below), whose sum is σ = 1059702912. Its totient is φ = 294360960.

The previous prime is 646368643. The next prime is 646368691. The reversal of 646368662 is 266863646.

646368662 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 305573 + ... + 307680.

It is an arithmetic number, because the mean of its divisors is an integer number (66231432).

Almost surely, 2^646368662 is an apocalyptic number.

646368662 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

646368662 is a deficient number, since it is larger than the sum of its proper divisors (413334250).

646368662 is a wasteful number, since it uses less digits than its factorization.

646368662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613303.

The product of its digits is 1492992, while the sum is 47.

The square root of 646368662 is about 25423.7814260586. The cubic root of 646368662 is about 864.6229601840.

The spelling of 646368662 in words is "six hundred forty-six million, three hundred sixty-eight thousand, six hundred sixty-two".