866906043 has 8 divisors (see below), whose sum is σ = 1156270656. Its totient is φ = 577739400.

The previous prime is 866906039. The next prime is 866906071. The reversal of 866906043 is 340609668.

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

It is not a de Polignac number, because 866906043 - 2² = 866906039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 866905986 and 866906004.

It is not an unprimeable number, because it can be changed into a prime (866906003) 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, 38953 + ... + 57018.

It is an arithmetic number, because the mean of its divisors is an integer number (144533832).

Almost surely, 2^866906043 is an apocalyptic number.

866906043 is a deficient number, since it is larger than the sum of its proper divisors (289364613).

866906043 is a wasteful number, since it uses less digits than its factorization.

866906043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98985.

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 866906043 is about 29443.2682119360. The cubic root of 866906043 is about 953.5072731696.

The spelling of 866906043 in words is "eight hundred sixty-six million, nine hundred six thousand, forty-three".