866802753 has 12 divisors (see below), whose sum is σ = 1252377828. Its totient is φ = 577716480.

The previous prime is 866802751. The next prime is 866802763. The reversal of 866802753 is 357208668.

It can be written as a sum of positive squares in 2 ways, for example, as 91068849 + 775733904 = 9543^2 + 27852^2 .

It is not a de Polignac number, because 866802753 - 2¹ = 866802751 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 866802699 and 866802708.

It is not an unprimeable number, because it can be changed into a prime (866802751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31573 + ... + 52253.

It is an arithmetic number, because the mean of its divisors is an integer number (104364819).

Almost surely, 2^866802753 is an apocalyptic number.

It is an amenable number.

866802753 is a deficient number, since it is larger than the sum of its proper divisors (385575075).

866802753 is a wasteful number, since it uses less digits than its factorization.

866802753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25344 (or 25341 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 866802753 is about 29441.5141084829. The cubic root of 866802753 is about 953.4694022150.

The spelling of 866802753 in words is "eight hundred sixty-six million, eight hundred two thousand, seven hundred fifty-three".