840620865331 has 8 divisors (see below), whose sum is σ = 905321970224. Its totient is φ = 775925183520.

The previous prime is 840620865319. The next prime is 840620865347. The reversal of 840620865331 is 133568026048.

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

It is a cyclic number.

It is not a de Polignac number, because 840620865331 - 2³⁵ = 806261126963 is a prime.

It is a super-2 number, since 2×840620865331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (840620865391) 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, 1030941 + ... + 1656526.

It is an arithmetic number, because the mean of its divisors is an integer number (113165246278).

Almost surely, 2^840620865331 is an apocalyptic number.

840620865331 is a deficient number, since it is larger than the sum of its proper divisors (64701104893).

840620865331 is a wasteful number, since it uses less digits than its factorization.

840620865331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2711541.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 840620865331 in words is "eight hundred forty billion, six hundred twenty million, eight hundred sixty-five thousand, three hundred thirty-one".