866247696 has 200 divisors, whose sum is σ = 2669511680. Its totient is φ = 270418176.

The previous prime is 866247667. The next prime is 866247721. The reversal of 866247696 is 696742668.

866247696 is a `hidden beast` number, since 8 + 6 + 624 + 7 + 6 + 9 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3127110 + ... + 3127386.

Almost surely, 2^866247696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 866247696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1334755840).

866247696 is an abundant number, since it is smaller than the sum of its proper divisors (1803263984).

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

866247696 is a wasteful number, since it uses less digits than its factorization.

866247696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 428 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 866247696 is about 29432.0861645925. The cubic root of 866247696 is about 953.2658407672.

The spelling of 866247696 in words is "eight hundred sixty-six million, two hundred forty-seven thousand, six hundred ninety-six".