646066164603 has 16 divisors (see below), whose sum is σ = 891304250400. Its totient is φ = 415775377920.

The previous prime is 646066164563. The next prime is 646066164607. The reversal of 646066164603 is 306461660646.

It is not a de Polignac number, because 646066164603 - 2¹⁶ = 646066099067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (646066164607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305488 + ... + 1177053.

It is an arithmetic number, because the mean of its divisors is an integer number (55706515650).

Almost surely, 2^646066164603 is an apocalyptic number.

646066164603 is a deficient number, since it is larger than the sum of its proper divisors (245238085797).

646066164603 is a wasteful number, since it uses less digits than its factorization.

646066164603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487582.

The product of its (nonzero) digits is 2239488, while the sum is 48.

The spelling of 646066164603 in words is "six hundred forty-six billion, sixty-six million, one hundred sixty-four thousand, six hundred three".