647434011 has 24 divisors (see below), whose sum is σ = 1005242880. Its totient is φ = 369572112.

The previous prime is 647434009. The next prime is 647434033. The reversal of 647434011 is 110434746.

It is not a de Polignac number, because 647434011 - 2¹ = 647434009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 647434011.

It is not an unprimeable number, because it can be changed into a prime (647434111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193410 + ... + 196728.

It is an arithmetic number, because the mean of its divisors is an integer number (41885120).

Almost surely, 2^647434011 is an apocalyptic number.

647434011 is a deficient number, since it is larger than the sum of its proper divisors (357808869).

647434011 is a wasteful number, since it uses less digits than its factorization.

647434011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4663 (or 4656 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 647434011 is about 25444.7246202430. The cubic root of 647434011 is about 865.0977251568.

Adding to 647434011 its reverse (110434746), we get a palindrome (757868757).

The spelling of 647434011 in words is "six hundred forty-seven million, four hundred thirty-four thousand, eleven".