3351721 has 8 divisors (see below), whose sum is σ = 3579840. Its totient is φ = 3130512.

The previous prime is 3351683. The next prime is 3351743. The reversal of 3351721 is 1271533.

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 3351721 - 2⁹ = 3351209 is a prime.

It is a super-2 number, since 2×3351721² = 22468067323682, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3351692 and 3351701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3351121) 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, 706 + ... + 2683.

It is an arithmetic number, because the mean of its divisors is an integer number (447480).

Almost surely, 2^3351721 is an apocalyptic number.

It is an amenable number.

3351721 is a deficient number, since it is larger than the sum of its proper divisors (228119).

3351721 is a wasteful number, since it uses less digits than its factorization.

3351721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3455.

The product of its digits is 630, while the sum is 22.

The square root of 3351721 is about 1830.7706027791. The cubic root of 3351721 is about 149.6543299526.

The spelling of 3351721 in words is "three million, three hundred fifty-one thousand, seven hundred twenty-one".