840646341 has 6 divisors (see below), whose sum is σ = 1214266950. Its totient is φ = 560430888.

The previous prime is 840646333. The next prime is 840646349. The reversal of 840646341 is 143646048.

840646341 is a `hidden beast` number, since 8 + 4 + 0 + 646 + 3 + 4 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (840646333) and next prime (840646349).

It can be written as a sum of positive squares in only one way, i.e., 429732900 + 410913441 = 20730^2 + 20271^2 .

It is not a de Polignac number, because 840646341 - 2³ = 840646333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 840646296 and 840646305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840646349) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46702566 + ... + 46702583.

It is an arithmetic number, because the mean of its divisors is an integer number (202377825).

Almost surely, 2^840646341 is an apocalyptic number.

It is an amenable number.

840646341 is a deficient number, since it is larger than the sum of its proper divisors (373620609).

840646341 is a wasteful number, since it uses less digits than its factorization.

840646341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93405155 (or 93405152 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 840646341 is about 28993.9017898592. The cubic root of 840646341 is about 943.7807371186.

The spelling of 840646341 in words is "eight hundred forty million, six hundred forty-six thousand, three hundred forty-one".