63663693 has 16 divisors (see below), whose sum is σ = 88984896. Its totient is φ = 40440960.

The previous prime is 63663683. The next prime is 63663731. The reversal of 63663693 is 39636636.

It is not a de Polignac number, because 63663693 - 2⁶ = 63663629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63663683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 730 + ... + 11307.

It is an arithmetic number, because the mean of its divisors is an integer number (5561556).

Almost surely, 2^63663693 is an apocalyptic number.

It is an amenable number.

63663693 is a deficient number, since it is larger than the sum of its proper divisors (25321203).

63663693 is a wasteful number, since it uses less digits than its factorization.

63663693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12124.

The product of its digits is 314928, while the sum is 42.

The square root of 63663693 is about 7978.9531268206. The cubic root of 63663693 is about 399.2981295818.

The spelling of 63663693 in words is "sixty-three million, six hundred sixty-three thousand, six hundred ninety-three".