2735981 has 4 divisors (see below), whose sum is σ = 2880000. Its totient is φ = 2591964.

The previous prime is 2735977. The next prime is 2735983. The reversal of 2735981 is 1895372.

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.

It is a cyclic number.

It is not a de Polignac number, because 2735981 - 2² = 2735977 is a prime.

It is a super-2 number, since 2×2735981² = 14971184064722, 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 (2735983) 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, 71981 + ... + 72018.

It is an arithmetic number, because the mean of its divisors is an integer number (720000).

2^2735981 is an apocalyptic number.

It is an amenable number.

2735981 is a deficient number, since it is larger than the sum of its proper divisors (144019).

2735981 is a wasteful number, since it uses less digits than its factorization.

2735981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144018.

The product of its digits is 15120, while the sum is 35.

The square root of 2735981 is about 1654.0801068872. The cubic root of 2735981 is about 139.8634893840.

The spelling of 2735981 in words is "two million, seven hundred thirty-five thousand, nine hundred eighty-one".