646452064604 has 24 divisors (see below), whose sum is σ = 1139137562640. Its totient is φ = 320991365376.

The previous prime is 646452064589. The next prime is 646452064619. The reversal of 646452064604 is 406460254646.

It is an interprime number because it is at equal distance from previous prime (646452064589) and next prime (646452064619).

It is a congruent number.

It is an unprimeable number.

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, 536189 + ... + 1257140.

It is an arithmetic number, because the mean of its divisors is an integer number (47464065110).

Almost surely, 2^646452064604 is an apocalyptic number.

It is an amenable number.

646452064604 is a deficient number, since it is larger than the sum of its proper divisors (492685498036).

646452064604 is a wasteful number, since it uses less digits than its factorization.

646452064604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793957 (or 1793955 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 47.

The spelling of 646452064604 in words is "six hundred forty-six billion, four hundred fifty-two million, sixty-four thousand, six hundred four".