117663783 has 16 divisors (see below), whose sum is σ = 166733280. Its totient is φ = 73552896.

The previous prime is 117663779. The next prime is 117663823. The reversal of 117663783 is 387366711.

It is not a de Polignac number, because 117663783 - 2² = 117663779 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117663703) 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, 9963 + ... + 18291.

It is an arithmetic number, because the mean of its divisors is an integer number (10420830).

Almost surely, 2^117663783 is an apocalyptic number.

117663783 is a deficient number, since it is larger than the sum of its proper divisors (49069497).

117663783 is a wasteful number, since it uses less digits than its factorization.

117663783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8626.

The product of its digits is 127008, while the sum is 42.

The square root of 117663783 is about 10847.2938099786. The cubic root of 117663783 is about 490.0205225335.

The spelling of 117663783 in words is "one hundred seventeen million, six hundred sixty-three thousand, seven hundred eighty-three".