117780247 has 8 divisors (see below), whose sum is σ = 126924560. Its totient is φ = 108648000.

The previous prime is 117780227. The next prime is 117780251. The reversal of 117780247 is 742087711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 117780247 - 2⁷ = 117780119 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 (117780227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37504 + ... + 40522.

It is an arithmetic number, because the mean of its divisors is an integer number (15865570).

Almost surely, 2^117780247 is an apocalyptic number.

117780247 is a deficient number, since it is larger than the sum of its proper divisors (9144313).

117780247 is a wasteful number, since it uses less digits than its factorization.

117780247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6033.

The product of its (nonzero) digits is 21952, while the sum is 37.

The square root of 117780247 is about 10852.6608258067. The cubic root of 117780247 is about 490.1821438632.

The spelling of 117780247 in words is "one hundred seventeen million, seven hundred eighty thousand, two hundred forty-seven".