2661893 has 8 divisors (see below), whose sum is σ = 2902368. Its totient is φ = 2426544.

The previous prime is 2661871. The next prime is 2661899. The reversal of 2661893 is 3981662.

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 2661893 - 2¹⁰ = 2660869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661899) 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, 155 + ... + 2312.

It is an arithmetic number, because the mean of its divisors is an integer number (362796).

2^2661893 is an apocalyptic number.

It is an amenable number.

2661893 is a deficient number, since it is larger than the sum of its proper divisors (240475).

2661893 is a wasteful number, since it uses less digits than its factorization.

2661893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563.

The product of its digits is 15552, while the sum is 35.

The square root of 2661893 is about 1631.5308762019. The cubic root of 2661893 is about 138.5894585551.

The spelling of 2661893 in words is "two million, six hundred sixty-one thousand, eight hundred ninety-three".