647404106 has 8 divisors (see below), whose sum is σ = 977624100. Its totient is φ = 321529408.

The previous prime is 647404099. The next prime is 647404129. The reversal of 647404106 is 601404746.

It can be written as a sum of positive squares in 2 ways, for example, as 633780625 + 13623481 = 25175^2 + 3691^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1085951 + ... + 1086546.

Almost surely, 2^647404106 is an apocalyptic number.

647404106 is a deficient number, since it is larger than the sum of its proper divisors (330219994).

647404106 is a wasteful number, since it uses less digits than its factorization.

647404106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172648.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 647404106 is about 25444.1369670893. The cubic root of 647404106 is about 865.0844053201.

The spelling of 647404106 in words is "six hundred forty-seven million, four hundred four thousand, one hundred six".