647106051 has 8 divisors (see below), whose sum is σ = 863430400. Its totient is φ = 431092872.

The previous prime is 647106043. The next prime is 647106067. The reversal of 647106051 is 150601746.

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

It is not a de Polignac number, because 647106051 - 2³ = 647106043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (647106151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72895 + ... + 81288.

It is an arithmetic number, because the mean of its divisors is an integer number (107928800).

Almost surely, 2^647106051 is an apocalyptic number.

647106051 is a deficient number, since it is larger than the sum of its proper divisors (216324349).

647106051 is a wasteful number, since it uses less digits than its factorization.

647106051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155585.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 647106051 is about 25438.2792460496. The cubic root of 647106051 is about 864.9516277092.

Adding to 647106051 its reverse (150601746), we get a palindrome (797707797).

The spelling of 647106051 in words is "six hundred forty-seven million, one hundred six thousand, fifty-one".