63673661693 has 8 divisors (see below), whose sum is σ = 64774002048. Its totient is φ = 62579486304.

The previous prime is 63673661671. The next prime is 63673661717. The reversal of 63673661693 is 39616637636.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 63673661693 - 2⁸ = 63673661437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63673661663) 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, 1520405 + ... + 1561722.

It is an arithmetic number, because the mean of its divisors is an integer number (8096750256).

Almost surely, 2^63673661693 is an apocalyptic number.

It is an amenable number.

63673661693 is a deficient number, since it is larger than the sum of its proper divisors (1100340355).

63673661693 is a wasteful number, since it uses less digits than its factorization.

63673661693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3082483.

The product of its digits is 13226976, while the sum is 56.

The spelling of 63673661693 in words is "sixty-three billion, six hundred seventy-three million, six hundred sixty-one thousand, six hundred ninety-three".