647611653407 has 16 divisors (see below), whose sum is σ = 699544055808. Its totient is φ = 597773763840.

The previous prime is 647611653401. The next prime is 647611653509. The reversal of 647611653407 is 704356116746.

It is not a de Polignac number, because 647611653407 - 2⁶ = 647611653343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647611653401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1034843 + ... + 1538220.

It is an arithmetic number, because the mean of its divisors is an integer number (43721503488).

Almost surely, 2^647611653407 is an apocalyptic number.

647611653407 is a deficient number, since it is larger than the sum of its proper divisors (51932402401).

647611653407 is a wasteful number, since it uses less digits than its factorization.

647611653407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573470.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 647611653407 in words is "six hundred forty-seven billion, six hundred eleven million, six hundred fifty-three thousand, four hundred seven".