833421681 has 12 divisors (see below), whose sum is σ = 1267191120. Its totient is φ = 526371480.

The previous prime is 833421653. The next prime is 833421713. The reversal of 833421681 is 186124338.

It is not a de Polignac number, because 833421681 - 2¹³ = 833413489 is a prime.

It is a super-2 number, since 2×833421681² = 1389183396721731522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (833421601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2436735 + ... + 2437076.

It is an arithmetic number, because the mean of its divisors is an integer number (105599260).

Almost surely, 2^833421681 is an apocalyptic number.

It is an amenable number.

833421681 is a deficient number, since it is larger than the sum of its proper divisors (433769439).

833421681 is a wasteful number, since it uses less digits than its factorization.

833421681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4873836 (or 4873833 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 833421681 is about 28869.0436453998. The cubic root of 833421681 is about 941.0692830408.

The spelling of 833421681 in words is "eight hundred thirty-three million, four hundred twenty-one thousand, six hundred eighty-one".