117772587 has 6 divisors (see below), whose sum is σ = 170115972. Its totient is φ = 78515052.

The previous prime is 117772573. The next prime is 117772597. The reversal of 117772587 is 785277711.

It is a happy number.

It is not a de Polignac number, because 117772587 - 2¹¹ = 117770539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117772597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6542913 + ... + 6542930.

It is an arithmetic number, because the mean of its divisors is an integer number (28352662).

Almost surely, 2^117772587 is an apocalyptic number.

117772587 is a deficient number, since it is larger than the sum of its proper divisors (52343385).

117772587 is a wasteful number, since it uses less digits than its factorization.

117772587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13085849 (or 13085846 counting only the distinct ones).

The product of its digits is 192080, while the sum is 45.

The square root of 117772587 is about 10852.3079112233. The cubic root of 117772587 is about 490.1715170767.

The spelling of 117772587 in words is "one hundred seventeen million, seven hundred seventy-two thousand, five hundred eighty-seven".