866738741 has 4 divisors (see below), whose sum is σ = 945533184. Its totient is φ = 787944300.

The previous prime is 866738707. The next prime is 866738759. The reversal of 866738741 is 147837668.

866738741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-866738741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 866738741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866738701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39397205 + ... + 39397226.

It is an arithmetic number, because the mean of its divisors is an integer number (236383296).

Almost surely, 2^866738741 is an apocalyptic number.

It is an amenable number.

866738741 is a deficient number, since it is larger than the sum of its proper divisors (78794443).

866738741 is a wasteful number, since it uses less digits than its factorization.

866738741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78794442.

The product of its digits is 1354752, while the sum is 50.

The square root of 866738741 is about 29440.4269839960. The cubic root of 866738741 is about 953.4459309060.

The spelling of 866738741 in words is "eight hundred sixty-six million, seven hundred thirty-eight thousand, seven hundred forty-one".