117644 has 6 divisors (see below), whose sum is σ = 205884. Its totient is φ = 58820.

The previous prime is 117643. The next prime is 117659. The reversal of 117644 is 446711.

It is a super-2 number, since 2×117644² = 27680221472, which contains 22 as substring.

It is a plaindrome in base 15.

It is a nialpdrome in base 7.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 117644.

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 as a sum of consecutive naturals, namely, 14702 + ... + 14709.

It is an arithmetic number, because the mean of its divisors is an integer number (34314).

117644 is a Friedman number, since it can be written as 7^6-4-(1*1)^4, using all its digits and the basic arithmetic operations.

2¹¹⁷⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

117644 is a deficient number, since it is larger than the sum of its proper divisors (88240).

117644 is a wasteful number, since it uses less digits than its factorization.

117644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29415 (or 29413 counting only the distinct ones).

The product of its digits is 672, while the sum is 23.

The square root of 117644 is about 342.9927112928. The cubic root of 117644 is about 48.9993058350. Note that the first 3 decimals are identical.

The spelling of 117644 in words is "one hundred seventeen thousand, six hundred forty-four".