647456954 has 8 divisors (see below), whose sum is σ = 972097140. Its totient is φ = 323424576.

The previous prime is 647456941. The next prime is 647456959. The reversal of 647456954 is 459654746.

It can be written as a sum of positive squares in 2 ways, for example, as 584333929 + 63123025 = 24173^2 + 7945^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (647456959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149279 + ... + 153554.

Almost surely, 2^647456954 is an apocalyptic number.

647456954 is a deficient number, since it is larger than the sum of its proper divisors (324640186).

647456954 is a wasteful number, since it uses less digits than its factorization.

647456954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303904.

The product of its digits is 3628800, while the sum is 50.

The square root of 647456954 is about 25445.1754562628. The cubic root of 647456954 is about 865.1079438057.

The spelling of 647456954 in words is "six hundred forty-seven million, four hundred fifty-six thousand, nine hundred fifty-four".