3559721 has 8 divisors (see below), whose sum is σ = 4017600. Its totient is φ = 3124240.

The previous prime is 3559711. The next prime is 3559729. The reversal of 3559721 is 1279553.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3559721 is a prime.

It is a super-2 number, since 2×3559721² = 25343227195682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3559729) 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, 5261 + ... + 5898.

It is an arithmetic number, because the mean of its divisors is an integer number (502200).

Almost surely, 2^3559721 is an apocalyptic number.

It is an amenable number.

3559721 is a deficient number, since it is larger than the sum of its proper divisors (457879).

3559721 is a wasteful number, since it uses less digits than its factorization.

3559721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11199.

The product of its digits is 9450, while the sum is 32.

The square root of 3559721 is about 1886.7222901106. The cubic root of 3559721 is about 152.6881454581.

The spelling of 3559721 in words is "three million, five hundred fifty-nine thousand, seven hundred twenty-one".