840358066 has 8 divisors (see below), whose sum is σ = 1260923760. Its totient is φ = 420050148.

The previous prime is 840358039. The next prime is 840358081. The reversal of 840358066 is 660853048.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56076 + ... + 69463.

It is an arithmetic number, because the mean of its divisors is an integer number (157615470).

Almost surely, 2^840358066 is an apocalyptic number.

840358066 is a deficient number, since it is larger than the sum of its proper divisors (420565694).

840358066 is a wasteful number, since it uses less digits than its factorization.

840358066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128888.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 840358066 is about 28988.9300595934. The cubic root of 840358066 is about 943.6728441463.

The spelling of 840358066 in words is "eight hundred forty million, three hundred fifty-eight thousand, sixty-six".