866842745 has 8 divisors (see below), whose sum is σ = 1085438016. Its totient is φ = 663323056.

The previous prime is 866842727. The next prime is 866842759. The reversal of 866842745 is 547248668.

It is a happy number.

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 866842745 - 2⁸ = 866842489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 866842693 and 866842702.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3768767 + ... + 3768996.

It is an arithmetic number, because the mean of its divisors is an integer number (135679752).

Almost surely, 2^866842745 is an apocalyptic number.

It is an amenable number.

866842745 is a deficient number, since it is larger than the sum of its proper divisors (218595271).

866842745 is a wasteful number, since it uses less digits than its factorization.

866842745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7537791.

The product of its digits is 2580480, while the sum is 50.

The square root of 866842745 is about 29442.1932776755. The cubic root of 866842745 is about 953.4840655133.

The spelling of 866842745 in words is "eight hundred sixty-six million, eight hundred forty-two thousand, seven hundred forty-five".