2068981 has 4 divisors (see below), whose sum is σ = 2071872. Its totient is φ = 2066092.

The previous prime is 2068973. The next prime is 2068991. The reversal of 2068981 is 1898602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2068981 - 2³ = 2068973 is a prime.

It is a super-2 number, since 2×2068981² = 8561364756722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2068921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516 + ... + 2098.

It is an arithmetic number, because the mean of its divisors is an integer number (517968).

2^2068981 is an apocalyptic number.

It is an amenable number.

2068981 is a deficient number, since it is larger than the sum of its proper divisors (2891).

2068981 is a wasteful number, since it uses less digits than its factorization.

2068981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2890.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 2068981 is about 1438.3952864216. The cubic root of 2068981 is about 127.4242738846.

The spelling of 2068981 in words is "two million, sixty-eight thousand, nine hundred eighty-one".