866040616 has 16 divisors (see below), whose sum is σ = 1855801440. Its totient is φ = 371160240.

The previous prime is 866040613. The next prime is 866040619. The reversal of 866040616 is 616040668.

It is an interprime number because it is at equal distance from previous prime (866040613) and next prime (866040619).

It is not an unprimeable number, because it can be changed into a prime (866040613) 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 3 ways as a sum of consecutive naturals, for example, 7732450 + ... + 7732561.

It is an arithmetic number, because the mean of its divisors is an integer number (115987590).

Almost surely, 2^866040616 is an apocalyptic number.

It is an amenable number.

866040616 is an abundant number, since it is smaller than the sum of its proper divisors (989760824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

866040616 is a wasteful number, since it uses less digits than its factorization.

866040616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15465024 (or 15465020 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 866040616 is about 29428.5680249651. The cubic root of 866040616 is about 953.1898740342.

The spelling of 866040616 in words is "eight hundred sixty-six million, forty thousand, six hundred sixteen".