2660761 has 4 divisors (see below), whose sum is σ = 2746624. Its totient is φ = 2574900.

The previous prime is 2660753. The next prime is 2660767. The reversal of 2660761 is 1670662.

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 2660761 - 2³ = 2660753 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (2660767) 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, 42885 + ... + 42946.

It is an arithmetic number, because the mean of its divisors is an integer number (686656).

2^2660761 is an apocalyptic number.

It is an amenable number.

2660761 is a deficient number, since it is larger than the sum of its proper divisors (85863).

2660761 is an equidigital number, since it uses as much as digits as its factorization.

2660761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85862.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 2660761 is about 1631.1839258649. The cubic root of 2660761 is about 138.5698101932.

Subtracting from 2660761 its reverse (1670662), we obtain a palindrome (990099).

The spelling of 2660761 in words is "two million, six hundred sixty thousand, seven hundred sixty-one".