117771769 has 2 divisors, whose sum is σ = 117771770. Its totient is φ = 117771768.

The previous prime is 117771763. The next prime is 117771779. The reversal of 117771769 is 967177711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117397225 + 374544 = 10835^2 + 612^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117771769 is a prime.

It is a super-2 number, since 2×117771769² = 27740379146778722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (117771763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58885884 + 58885885.

It is an arithmetic number, because the mean of its divisors is an integer number (58885885).

Almost surely, 2^117771769 is an apocalyptic number.

It is an amenable number.

117771769 is a deficient number, since it is larger than the sum of its proper divisors (1).

117771769 is an equidigital number, since it uses as much as digits as its factorization.

117771769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129654, while the sum is 46.

The square root of 117771769 is about 10852.2702233219. The cubic root of 117771769 is about 490.1703822307.

The spelling of 117771769 in words is "one hundred seventeen million, seven hundred seventy-one thousand, seven hundred sixty-nine".