866364013 has 8 divisors (see below), whose sum is σ = 917681400. Its totient is φ = 815086080.

The previous prime is 866363983. The next prime is 866364041. The reversal of 866364013 is 310463668.

It can be written as a sum of positive squares in 4 ways, for example, as 586705284 + 279658729 = 24222^2 + 16723^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 866364013 - 2²⁵ = 832809581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866364613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43713 + ... + 60361.

It is an arithmetic number, because the mean of its divisors is an integer number (114710175).

Almost surely, 2^866364013 is an apocalyptic number.

It is an amenable number.

866364013 is a deficient number, since it is larger than the sum of its proper divisors (51317387).

866364013 is a wasteful number, since it uses less digits than its factorization.

866364013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19727.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 866364013 is about 29434.0621219702. The cubic root of 866364013 is about 953.3085060313.

The spelling of 866364013 in words is "eight hundred sixty-six million, three hundred sixty-four thousand, thirteen".