663602216631 has 8 divisors (see below), whose sum is σ = 884894579184. Its totient is φ = 442355665920.

The previous prime is 663602216593. The next prime is 663602216633. The reversal of 663602216631 is 136612206366.

It is a happy number.

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

It is not a de Polignac number, because 663602216631 - 2¹⁰ = 663602215607 is a prime.

It is a super-2 number, since 2×663602216631² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663602216633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11419146 + ... + 11477111.

It is an arithmetic number, because the mean of its divisors is an integer number (110611822398).

Almost surely, 2^663602216631 is an apocalyptic number.

663602216631 is a deficient number, since it is larger than the sum of its proper divisors (221292362553).

663602216631 is a wasteful number, since it uses less digits than its factorization.

663602216631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22905921.

The product of its (nonzero) digits is 279936, while the sum is 42.

The spelling of 663602216631 in words is "six hundred sixty-three billion, six hundred two million, two hundred sixteen thousand, six hundred thirty-one".