978117682 has 8 divisors (see below), whose sum is σ = 1544396400. Its totient is φ = 463318884.

The previous prime is 978117671. The next prime is 978117683. The reversal of 978117682 is 286711879.

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

It is not an unprimeable number, because it can be changed into a prime (978117683) 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, 12869932 + ... + 12870007.

It is an arithmetic number, because the mean of its divisors is an integer number (193049550).

Almost surely, 2^978117682 is an apocalyptic number.

978117682 is a deficient number, since it is larger than the sum of its proper divisors (566278718).

978117682 is a wasteful number, since it uses less digits than its factorization.

978117682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25739960.

The product of its digits is 338688, while the sum is 49.

The square root of 978117682 is about 31274.8730133313. The cubic root of 978117682 is about 992.6520336356.

The spelling of 978117682 in words is "nine hundred seventy-eight million, one hundred seventeen thousand, six hundred eighty-two".