647341011 has 64 divisors (see below), whose sum is σ = 1066383360. Its totient is φ = 386311680.

The previous prime is 647340983. The next prime is 647341021. The reversal of 647341011 is 110143746.

It is a happy number.

647341011 is a `hidden beast` number, since 647 + 3 + 4 + 1 + 0 + 11 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-647341011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (647341021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 797796 + ... + 798606.

It is an arithmetic number, because the mean of its divisors is an integer number (16662240).

Almost surely, 2^647341011 is an apocalyptic number.

647341011 is a deficient number, since it is larger than the sum of its proper divisors (419042349).

647341011 is a wasteful number, since it uses less digits than its factorization.

647341011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921 (or 915 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 647341011 is about 25442.8970638172. The cubic root of 647341011 is about 865.0563011457.

Adding to 647341011 its reverse (110143746), we get a palindrome (757484757).

The spelling of 647341011 in words is "six hundred forty-seven million, three hundred forty-one thousand, eleven".