647063404031 has 16 divisors (see below), whose sum is σ = 722244584448. Its totient is φ = 574759051200.

The previous prime is 647063404019. The next prime is 647063404037. The reversal of 647063404031 is 130404360746.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-647063404031 is a prime.

It is a super-2 number, since 2×647063404031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647063404037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3679535 + ... + 3851376.

It is an arithmetic number, because the mean of its divisors is an integer number (45140286528).

Almost surely, 2^647063404031 is an apocalyptic number.

647063404031 is a deficient number, since it is larger than the sum of its proper divisors (75181180417).

647063404031 is a wasteful number, since it uses less digits than its factorization.

647063404031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7531102.

The product of its (nonzero) digits is 145152, while the sum is 38.

Adding to 647063404031 its reverse (130404360746), we get a palindrome (777467764777).

The spelling of 647063404031 in words is "six hundred forty-seven billion, sixty-three million, four hundred four thousand, thirty-one".