866036147 has 4 divisors (see below), whose sum is σ = 884462496. Its totient is φ = 847609800.

The previous prime is 866036141. The next prime is 866036159. The reversal of 866036147 is 741630668.

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 866036147 - 2²⁸ = 597600691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (866036141) 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, 9213104 + ... + 9213197.

It is an arithmetic number, because the mean of its divisors is an integer number (221115624).

Almost surely, 2^866036147 is an apocalyptic number.

866036147 is a deficient number, since it is larger than the sum of its proper divisors (18426349).

866036147 is a wasteful number, since it uses less digits than its factorization.

866036147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18426348.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 866036147 is about 29428.4920952467. The cubic root of 866036147 is about 953.1882344602.

The spelling of 866036147 in words is "eight hundred sixty-six million, thirty-six thousand, one hundred forty-seven".