117263681 has 2 divisors, whose sum is σ = 117263682. Its totient is φ = 117263680.

The previous prime is 117263647. The next prime is 117263711. The reversal of 117263681 is 186362711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66569281 + 50694400 = 8159^2 + 7120^2 .

It is a cyclic number.

It is not a de Polignac number, because 117263681 - 2²⁶ = 50154817 is a prime.

It is a super-2 number, since 2×117263681² = 27501541763339522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (117263381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58631840 + 58631841.

It is an arithmetic number, because the mean of its divisors is an integer number (58631841).

Almost surely, 2^117263681 is an apocalyptic number.

It is an amenable number.

117263681 is a deficient number, since it is larger than the sum of its proper divisors (1).

117263681 is an equidigital number, since it uses as much as digits as its factorization.

117263681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 117263681 is about 10828.8356253108. The cubic root of 117263681 is about 489.4644725431.

The spelling of 117263681 in words is "one hundred seventeen million, two hundred sixty-three thousand, six hundred eighty-one".