647404746 has 16 divisors (see below), whose sum is σ = 1362957600. Its totient is φ = 204443568.

The previous prime is 647404717. The next prime is 647404753.

647404746 is nontrivially palindromic in base 10.

647404746 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 647404698 and 647404707.

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, 2839381 + ... + 2839608.

It is an arithmetic number, because the mean of its divisors is an integer number (85184850).

Almost surely, 2^647404746 is an apocalyptic number.

647404746 is an abundant number, since it is smaller than the sum of its proper divisors (715552854).

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

647404746 is a wasteful number, since it uses less digits than its factorization.

647404746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5679013.

The product of its (nonzero) digits is 451584, while the sum is 42.

The square root of 647404746 is about 25444.1495436574. The cubic root of 647404746 is about 865.0846903836.

The spelling of 647404746 in words is "six hundred forty-seven million, four hundred four thousand, seven hundred forty-six".