117643071 has 24 divisors (see below), whose sum is σ = 196505904. Its totient is φ = 62052480.

The previous prime is 117643061. The next prime is 117643139. The reversal of 117643071 is 170346711.

It is not a de Polignac number, because 117643071 - 2⁵ = 117643039 is a prime.

It is a super-2 number, since 2×117643071² = 27679784308622082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117643061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28870 + ... + 32691.

It is an arithmetic number, because the mean of its divisors is an integer number (8187746).

Almost surely, 2^117643071 is an apocalyptic number.

117643071 is a deficient number, since it is larger than the sum of its proper divisors (78862833).

117643071 is a wasteful number, since it uses less digits than its factorization.

117643071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61591 (or 61584 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 117643071 is about 10846.3390597934. The cubic root of 117643071 is about 489.9917685692.

Adding to 117643071 its reverse (170346711), we get a palindrome (287989782).

The spelling of 117643071 in words is "one hundred seventeen million, six hundred forty-three thousand, seventy-one".