866824026 has 16 divisors (see below), whose sum is σ = 1749554400. Its totient is φ = 286290288.

The previous prime is 866823983. The next prime is 866824027. The reversal of 866824026 is 620428668.

It is not an unprimeable number, because it can be changed into a prime (866824027) 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, 662056 + ... + 663363.

It is an arithmetic number, because the mean of its divisors is an integer number (109347150).

Almost surely, 2^866824026 is an apocalyptic number.

866824026 is an abundant number, since it is smaller than the sum of its proper divisors (882730374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

866824026 is a wasteful number, since it uses less digits than its factorization.

866824026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325533.

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 866824026 is about 29441.8753818435. The cubic root of 866824026 is about 953.4772021398.

The spelling of 866824026 in words is "eight hundred sixty-six million, eight hundred twenty-four thousand, twenty-six".