117060781 has 4 divisors (see below), whose sum is σ = 119915964. Its totient is φ = 114205600.

The previous prime is 117060751. The next prime is 117060799. The reversal of 117060781 is 187060711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 187060711 = 229 ⋅816859.

It can be written as a sum of positive squares in 2 ways, for example, as 58293225 + 58767556 = 7635^2 + 7666^2 .

It is a cyclic number.

It is not a de Polignac number, because 117060781 - 2¹⁵ = 117028013 is a prime.

It is a super-2 number, since 2×117060781² = 27406452896659922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117060751) 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, 1427530 + ... + 1427611.

It is an arithmetic number, because the mean of its divisors is an integer number (29978991).

Almost surely, 2^117060781 is an apocalyptic number.

It is an amenable number.

117060781 is a deficient number, since it is larger than the sum of its proper divisors (2855183).

117060781 is an equidigital number, since it uses as much as digits as its factorization.

117060781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855182.

The product of its (nonzero) digits is 2352, while the sum is 31.

The square root of 117060781 is about 10819.4630643115. The cubic root of 117060781 is about 489.1820046456.

The spelling of 117060781 in words is "one hundred seventeen million, sixty thousand, seven hundred eighty-one".