866253026 has 16 divisors (see below), whose sum is σ = 1387549440. Its totient is φ = 404700240.

The previous prime is 866253007. The next prime is 866253053. The reversal of 866253026 is 620352668.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239096 + ... + 242691.

It is an arithmetic number, because the mean of its divisors is an integer number (86721840).

Almost surely, 2^866253026 is an apocalyptic number.

866253026 is a deficient number, since it is larger than the sum of its proper divisors (521296414).

866253026 is a wasteful number, since it uses less digits than its factorization.

866253026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481849.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 866253026 is about 29432.1767118914. The cubic root of 866253026 is about 953.2677959033.

The spelling of 866253026 in words is "eight hundred sixty-six million, two hundred fifty-three thousand, twenty-six".