3332726721 has 16 divisors (see below), whose sum is σ = 4963230720. Its totient is φ = 2210181840.

The previous prime is 3332726717. The next prime is 3332726731. The reversal of 3332726721 is 1276272333.

It is not a de Polignac number, because 3332726721 - 2² = 3332726717 is a prime.

It is a super-2 number, since 2×3332726721² = 22214134793734823682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3332726731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317970 + ... + 328283.

It is an arithmetic number, because the mean of its divisors is an integer number (310201920).

Almost surely, 2^3332726721 is an apocalyptic number.

It is an amenable number.

3332726721 is a deficient number, since it is larger than the sum of its proper divisors (1630503999).

3332726721 is a wasteful number, since it uses less digits than its factorization.

3332726721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646453 (or 646447 counting only the distinct ones).

The product of its digits is 63504, while the sum is 36.

The square root of 3332726721 is about 57729.7732630226. The cubic root of 3332726721 is about 1493.7109608420.

The spelling of 3332726721 in words is "three billion, three hundred thirty-two million, seven hundred twenty-six thousand, seven hundred twenty-one".