117885577 has 4 divisors (see below), whose sum is σ = 118182916. Its totient is φ = 117588240.

The previous prime is 117885563. The next prime is 117885613. The reversal of 117885577 is 775588711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 775588711 = 7643 ⋅101477.

It can be written as a sum of positive squares in 2 ways, for example, as 82791801 + 35093776 = 9099^2 + 5924^2 .

It is a cyclic number.

It is not a de Polignac number, because 117885577 - 2¹¹ = 117883529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117885577.

It is not an unprimeable number, because it can be changed into a prime (117885527) 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, 148074 + ... + 148867.

It is an arithmetic number, because the mean of its divisors is an integer number (29545729).

Almost surely, 2^117885577 is an apocalyptic number.

It is an amenable number.

117885577 is a deficient number, since it is larger than the sum of its proper divisors (297339).

117885577 is an equidigital number, since it uses as much as digits as its factorization.

117885577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297338.

The product of its digits is 548800, while the sum is 49.

The square root of 117885577 is about 10857.5124683327. The cubic root of 117885577 is about 490.3282224096.

The spelling of 117885577 in words is "one hundred seventeen million, eight hundred eighty-five thousand, five hundred seventy-seven".