647645546746 has 16 divisors (see below), whose sum is σ = 1070276532768. Its totient is φ = 291469642000.

The previous prime is 647645546719. The next prime is 647645546753.

It is a happy number.

647645546746 is nontrivially palindromic in base 10.

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, 145732600 + ... + 145737043.

It is an arithmetic number, because the mean of its divisors is an integer number (66892283298).

Almost surely, 2^647645546746 is an apocalyptic number.

647645546746 is a deficient number, since it is larger than the sum of its proper divisors (422630986022).

647645546746 is a wasteful number, since it uses less digits than its factorization.

647645546746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291469757.

The product of its digits is 406425600, while the sum is 64.

The spelling of 647645546746 in words is "six hundred forty-seven billion, six hundred forty-five million, five hundred forty-six thousand, seven hundred forty-six".