117681847 has 2 divisors, whose sum is σ = 117681848. Its totient is φ = 117681846.

The previous prime is 117681829. The next prime is 117681857. The reversal of 117681847 is 748186711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117681847 - 2¹⁹ = 117157559 is a prime.

It is a super-3 number, since 3×117681847³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117681857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58840923 + 58840924.

It is an arithmetic number, because the mean of its divisors is an integer number (58840924).

Almost surely, 2^117681847 is an apocalyptic number.

117681847 is a deficient number, since it is larger than the sum of its proper divisors (1).

117681847 is an equidigital number, since it uses as much as digits as its factorization.

117681847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75264, while the sum is 43.

The square root of 117681847 is about 10848.1264280981. The cubic root of 117681847 is about 490.0455975893.

The spelling of 117681847 in words is "one hundred seventeen million, six hundred eighty-one thousand, eight hundred forty-seven".