647248444842746 has 4 divisors (see below), whose sum is σ = 970872667264122. Its totient is φ = 323624222421372.

The previous prime is 647248444842641. The next prime is 647248444842781.

647248444842746 is nontrivially palindromic in base 10.

647248444842746 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 can be written as a sum of positive squares in only one way, i.e., 602429289469225 + 44819155373521 = 24544435^2 + 6694711^2 .

It is a super-2 number, since 2×647248444842746² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161812111210685 + ... + 161812111210688.

Almost surely, 2^{647248444842746} is an apocalyptic number.

647248444842746 is a deficient number, since it is larger than the sum of its proper divisors (323624222421376).

647248444842746 is a wasteful number, since it uses less digits than its factorization.

647248444842746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323624222421375.

The product of its digits is 7398752256, while the sum is 74.

The spelling of 647248444842746 in words is "six hundred forty-seven trillion, two hundred forty-eight billion, four hundred forty-four million, eight hundred forty-two thousand, seven hundred forty-six".