840747646086 has 16 divisors (see below), whose sum is σ = 1754603783424. Its totient is φ = 268064466824.

The previous prime is 840747646073. The next prime is 840747646087. The reversal of 840747646086 is 680646747048.

840747646086 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×840747646086² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840747646087) 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, 3046186986 + ... + 3046187261.

It is an arithmetic number, because the mean of its divisors is an integer number (109662736464).

Almost surely, 2^840747646086 is an apocalyptic number.

840747646086 is an abundant number, since it is smaller than the sum of its proper divisors (913856137338).

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

840747646086 is a wasteful number, since it uses less digits than its factorization.

840747646086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6092374275.

The product of its (nonzero) digits is 43352064, while the sum is 60.

The spelling of 840747646086 in words is "eight hundred forty billion, seven hundred forty-seven million, six hundred forty-six thousand, eighty-six".