117660547 has 4 divisors (see below), whose sum is σ = 118587136. Its totient is φ = 116733960.

The previous prime is 117660539. The next prime is 117660589. The reversal of 117660547 is 745066711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 745066711 = 409 ⋅1821679.

It is a cyclic number.

It is not a de Polignac number, because 117660547 - 2³ = 117660539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117660527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463104 + ... + 463357.

It is an arithmetic number, because the mean of its divisors is an integer number (29646784).

Almost surely, 2^117660547 is an apocalyptic number.

117660547 is a deficient number, since it is larger than the sum of its proper divisors (926589).

117660547 is an equidigital number, since it uses as much as digits as its factorization.

117660547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926588.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 117660547 is about 10847.1446473254. The cubic root of 117660547 is about 490.0160302961.

The spelling of 117660547 in words is "one hundred seventeen million, six hundred sixty thousand, five hundred forty-seven".