866786276340007 has 8 divisors (see below), whose sum is σ = 867628326898256. Its totient is φ = 865944231498432.

The previous prime is 866786276339959. The next prime is 866786276340113. The reversal of 866786276340007 is 700043672687668.

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

It is a cyclic number.

It is not a de Polignac number, because 866786276340007 - 2¹¹ = 866786276337959 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 (866786270340007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342020968 + ... + 344545954.

It is an arithmetic number, because the mean of its divisors is an integer number (108453540862282).

Almost surely, 2^{866786276340007} is an apocalyptic number.

866786276340007 is a deficient number, since it is larger than the sum of its proper divisors (842050558249).

866786276340007 is a wasteful number, since it uses less digits than its factorization.

866786276340007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2858337.

The product of its (nonzero) digits is 682795008, while the sum is 70.

The spelling of 866786276340007 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, two hundred seventy-six million, three hundred forty thousand, seven".