647434434746 has 32 divisors (see below), whose sum is σ = 1094407082496. Its totient is φ = 284588568000.

The previous prime is 647434434737. The next prime is 647434434763.

647434434746 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 647434434691 and 647434434700.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 598136 + ... + 1285548.

It is an arithmetic number, because the mean of its divisors is an integer number (34200221328).

Almost surely, 2^647434434746 is an apocalyptic number.

647434434746 is a deficient number, since it is larger than the sum of its proper divisors (446972647750).

647434434746 is a wasteful number, since it uses less digits than its factorization.

647434434746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688838.

The product of its digits is 65028096, while the sum is 56.

The spelling of 647434434746 in words is "six hundred forty-seven billion, four hundred thirty-four million, four hundred thirty-four thousand, seven hundred forty-six".