2693661 has 4 divisors (see below), whose sum is σ = 3591552. Its totient is φ = 1795772.

The previous prime is 2693653. The next prime is 2693671. The reversal of 2693661 is 1663962.

It is a happy number.

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 2693661 - 2³ = 2693653 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2693651) 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, 448941 + ... + 448946.

It is an arithmetic number, because the mean of its divisors is an integer number (897888).

2^2693661 is an apocalyptic number.

It is an amenable number.

2693661 is a deficient number, since it is larger than the sum of its proper divisors (897891).

2693661 is an equidigital number, since it uses as much as digits as its factorization.

2693661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897890.

The product of its digits is 11664, while the sum is 33.

The square root of 2693661 is about 1641.2376427562. The cubic root of 2693661 is about 139.1386054234.

The spelling of 2693661 in words is "two million, six hundred ninety-three thousand, six hundred sixty-one".