117720769 has 4 divisors (see below), whose sum is σ = 119378880. Its totient is φ = 116062660.

The previous prime is 117720761. The next prime is 117720781. The reversal of 117720769 is 967027711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 117720769 - 2³ = 117720761 is a prime.

It is a super-2 number, since 2×117720769² = 27716358907902722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117720761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 828949 + ... + 829090.

It is an arithmetic number, because the mean of its divisors is an integer number (29844720).

Almost surely, 2^117720769 is an apocalyptic number.

It is an amenable number.

117720769 is a deficient number, since it is larger than the sum of its proper divisors (1658111).

117720769 is an equidigital number, since it uses as much as digits as its factorization.

117720769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658110.

The product of its (nonzero) digits is 37044, while the sum is 40.

The square root of 117720769 is about 10849.9202301215. The cubic root of 117720769 is about 490.0996173973.

The spelling of 117720769 in words is "one hundred seventeen million, seven hundred twenty thousand, seven hundred sixty-nine".