2764661 has 4 divisors (see below), whose sum is σ = 2768832. Its totient is φ = 2760492.

The previous prime is 2764651. The next prime is 2764667. The reversal of 2764661 is 1664672.

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 a de Polignac number, because none of the positive numbers 2^k-2764661 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 (2764667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 845 + ... + 2498.

It is an arithmetic number, because the mean of its divisors is an integer number (692208).

2^2764661 is an apocalyptic number.

It is an amenable number.

2764661 is a deficient number, since it is larger than the sum of its proper divisors (4171).

2764661 is an equidigital number, since it uses as much as digits as its factorization.

2764661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170.

The product of its digits is 12096, while the sum is 32.

The square root of 2764661 is about 1662.7269769869. The cubic root of 2764661 is about 140.3504993203.

The spelling of 2764661 in words is "two million, seven hundred sixty-four thousand, six hundred sixty-one".