3600981 has 6 divisors (see below), whose sum is σ = 5201430. Its totient is φ = 2400648.

The previous prime is 3600967. The next prime is 3600997. The reversal of 3600981 is 1890063.

It can be written as a sum of positive squares in only one way, i.e., 3481956 + 119025 = 1866^2 + 345^2 .

It is not a de Polignac number, because 3600981 - 2⁶ = 3600917 is a prime.

It is a super-2 number, since 2×3600981² = 25934128324722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3600911) 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 5 ways as a sum of consecutive naturals, for example, 200046 + ... + 200063.

It is an arithmetic number, because the mean of its divisors is an integer number (866905).

Almost surely, 2^3600981 is an apocalyptic number.

It is an amenable number.

3600981 is a deficient number, since it is larger than the sum of its proper divisors (1600449).

3600981 is a wasteful number, since it uses less digits than its factorization.

3600981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400115 (or 400112 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 3600981 is about 1897.6250946907. The cubic root of 3600981 is about 153.2758065024.

The spelling of 3600981 in words is "three million, six hundred thousand, nine hundred eighty-one".