117646 has 8 divisors (see below), whose sum is σ = 179640. Its totient is φ = 57768.

The previous prime is 117643. The next prime is 117659. The reversal of 117646 is 646711.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 117646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117643) 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, 381 + ... + 616.

It is an arithmetic number, because the mean of its divisors is an integer number (22455).

117646 is a Friedman number, since it can be written as 7^6+6/(1-4+1), using all its digits and the basic arithmetic operations.

2¹¹⁷⁶⁴⁶ is an apocalyptic number.

117646 is a deficient number, since it is larger than the sum of its proper divisors (61994).

117646 is an equidigital number, since it uses as much as digits as its factorization.

117646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058.

The product of its digits is 1008, while the sum is 25.

The square root of 117646 is about 342.9956267943. The cubic root of 117646 is about 48.9995835033. Note that the first 3 decimals are identical.

The spelling of 117646 in words is "one hundred seventeen thousand, six hundred forty-six".