647323746 has 16 divisors (see below), whose sum is σ = 1307467008. Its totient is φ = 213638000.

The previous prime is 647323727. The next prime is 647323759.

647323746 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 647323698 and 647323707.

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, 533490 + ... + 534701.

It is an arithmetic number, because the mean of its divisors is an integer number (81716688).

Almost surely, 2^647323746 is an apocalyptic number.

647323746 is an abundant number, since it is smaller than the sum of its proper divisors (660143262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

647323746 is a wasteful number, since it uses less digits than its factorization.

647323746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068297.

The product of its digits is 508032, while the sum is 42.

The square root of 647323746 is about 25442.5577723624. The cubic root of 647323746 is about 865.0486105418.

The spelling of 647323746 in words is "six hundred forty-seven million, three hundred twenty-three thousand, seven hundred forty-six".