663046631 has 24 divisors (see below), whose sum is σ = 783129984. Its totient is φ = 557360640.

The previous prime is 663046577. The next prime is 663046651. The reversal of 663046631 is 136640366.

It is not a de Polignac number, because 663046631 - 2⁶ = 663046567 is a prime.

It is a super-2 number, since 2×663046631² = 879261669760900322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 663046591 and 663046600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663046651) 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, 113621 + ... + 119313.

It is an arithmetic number, because the mean of its divisors is an integer number (32630416).

Almost surely, 2^663046631 is an apocalyptic number.

663046631 is a deficient number, since it is larger than the sum of its proper divisors (120083353).

663046631 is a wasteful number, since it uses less digits than its factorization.

663046631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5771 (or 5754 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 35.

The square root of 663046631 is about 25749.6918622340. The cubic root of 663046631 is about 871.9963978578.

Adding to 663046631 its reverse (136640366), we get a palindrome (799686997).

The spelling of 663046631 in words is "six hundred sixty-three million, forty-six thousand, six hundred thirty-one".