3380721 has 8 divisors (see below), whose sum is σ = 4516224. Its totient is φ = 2249520.

The previous prime is 3380687. The next prime is 3380723. The reversal of 3380721 is 1270833.

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

It is a de Polignac number, because none of the positive numbers 2^k-3380721 is a prime.

It is a super-2 number, since 2×3380721² = 22858548959682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3380691 and 3380700.

It is not an unprimeable number, because it can be changed into a prime (3380723) 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 7 ways as a sum of consecutive naturals, for example, 2115 + ... + 3351.

It is an arithmetic number, because the mean of its divisors is an integer number (564528).

Almost surely, 2^3380721 is an apocalyptic number.

It is an amenable number.

3380721 is a deficient number, since it is larger than the sum of its proper divisors (1135503).

3380721 is a wasteful number, since it uses less digits than its factorization.

3380721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 3380721 is about 1838.6737067789. The cubic root of 3380721 is about 150.0847077106.

The spelling of 3380721 in words is "three million, three hundred eighty thousand, seven hundred twenty-one".