8666978375 has 16 divisors (see below), whose sum is σ = 11799698976. Its totient is φ = 6303256000.

The previous prime is 8666978371. The next prime is 8666978389. The reversal of 8666978375 is 5738796668.

It is not a de Polignac number, because 8666978375 - 2² = 8666978371 is a prime.

It is a super-3 number, since 3×8666978375³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8666978371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3150254 + ... + 3153003.

It is an arithmetic number, because the mean of its divisors is an integer number (737481186).

Almost surely, 2^8666978375 is an apocalyptic number.

8666978375 is a deficient number, since it is larger than the sum of its proper divisors (3132720601).

8666978375 is a wasteful number, since it uses less digits than its factorization.

8666978375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6303283 (or 6303273 counting only the distinct ones).

The product of its digits is 91445760, while the sum is 65.

The square root of 8666978375 is about 93096.6077523773. The cubic root of 8666978375 is about 2054.1046748725.

The spelling of 8666978375 in words is "eight billion, six hundred sixty-six million, nine hundred seventy-eight thousand, three hundred seventy-five".