646332385607 has 4 divisors (see below), whose sum is σ = 662096590176. Its totient is φ = 630568181040.

The previous prime is 646332385591. The next prime is 646332385613. The reversal of 646332385607 is 706583233646.

It is a happy number.

646332385607 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 646332385607 - 2⁴ = 646332385591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646332385697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7882102223 + ... + 7882102304.

It is an arithmetic number, because the mean of its divisors is an integer number (165524147544).

Almost surely, 2^646332385607 is an apocalyptic number.

646332385607 is a deficient number, since it is larger than the sum of its proper divisors (15764204569).

646332385607 is a wasteful number, since it uses less digits than its factorization.

646332385607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15764204568.

The product of its (nonzero) digits is 13063680, while the sum is 53.

The spelling of 646332385607 in words is "six hundred forty-six billion, three hundred thirty-two million, three hundred eighty-five thousand, six hundred seven".