117347687 has 4 divisors (see below), whose sum is σ = 118124976. Its totient is φ = 116570400.

The previous prime is 117347677. The next prime is 117347723. The reversal of 117347687 is 786743711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 117347687 - 2¹² = 117343591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117347647) 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, 388418 + ... + 388719.

It is an arithmetic number, because the mean of its divisors is an integer number (29531244).

Almost surely, 2^117347687 is an apocalyptic number.

117347687 is a deficient number, since it is larger than the sum of its proper divisors (777289).

117347687 is an equidigital number, since it uses as much as digits as its factorization.

117347687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777288.

The product of its digits is 197568, while the sum is 44.

The square root of 117347687 is about 10832.7137412562. The cubic root of 117347687 is about 489.5813263927.

The spelling of 117347687 in words is "one hundred seventeen million, three hundred forty-seven thousand, six hundred eighty-seven".