3581961 has 8 divisors (see below), whose sum is σ = 4786944. Its totient is φ = 2382480.

The previous prime is 3581953. The next prime is 3581971. The reversal of 3581961 is 1691853.

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

It is not a de Polignac number, because 3581961 - 2³ = 3581953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3581911) 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, 520 + ... + 2726.

It is an arithmetic number, because the mean of its divisors is an integer number (598368).

Almost surely, 2^3581961 is an apocalyptic number.

It is an amenable number.

3581961 is a deficient number, since it is larger than the sum of its proper divisors (1204983).

3581961 is a wasteful number, since it uses less digits than its factorization.

3581961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751.

The product of its digits is 6480, while the sum is 33.

The square root of 3581961 is about 1892.6069322498. The cubic root of 3581961 is about 153.0054677870.

The spelling of 3581961 in words is "three million, five hundred eighty-one thousand, nine hundred sixty-one".