866247052 has 48 divisors (see below), whose sum is σ = 1743184800. Its totient is φ = 372968960.

The previous prime is 866247007. The next prime is 866247079. The reversal of 866247052 is 250742668.

It is a junction number, because it is equal to n+sod(n) for n = 866246996 and 866247014.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61224 + ... + 74032.

It is an arithmetic number, because the mean of its divisors is an integer number (36316350).

Almost surely, 2^866247052 is an apocalyptic number.

It is an amenable number.

866247052 is an abundant number, since it is smaller than the sum of its proper divisors (876937748).

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

866247052 is a wasteful number, since it uses less digits than its factorization.

866247052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12906 (or 12904 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 866247052 is about 29432.0752241496. The cubic root of 866247052 is about 953.2656045363.

The spelling of 866247052 in words is "eight hundred sixty-six million, two hundred forty-seven thousand, fifty-two".