3980561 has 8 divisors (see below), whose sum is σ = 4322304. Its totient is φ = 3643920.

The previous prime is 3980551. The next prime is 3980579. The reversal of 3980561 is 1650893.

3980561 is nontrivially palindromic in base 11.

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 3980561 - 2¹⁸ = 3718417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3980521) 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, 446 + ... + 2856.

It is an arithmetic number, because the mean of its divisors is an integer number (540288).

Almost surely, 2^3980561 is an apocalyptic number.

It is an amenable number.

3980561 is a deficient number, since it is larger than the sum of its proper divisors (341743).

3980561 is a wasteful number, since it uses less digits than its factorization.

3980561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 3980561 is about 1995.1343313171. The cubic root of 3980561 is about 158.4825417718.

The spelling of 3980561 in words is "three million, nine hundred eighty thousand, five hundred sixty-one".