2606749 has 4 divisors (see below), whose sum is σ = 2616640. Its totient is φ = 2596860.

The previous prime is 2606741. The next prime is 2606753. The reversal of 2606749 is 9476062.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9476062 = 2 ⋅4738031.

It is a cyclic number.

It is not a de Polignac number, because 2606749 - 2³ = 2606741 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 (2606741) 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, 4539 + ... + 5080.

It is an arithmetic number, because the mean of its divisors is an integer number (654160).

2^2606749 is an apocalyptic number.

It is an amenable number.

2606749 is a deficient number, since it is larger than the sum of its proper divisors (9891).

2606749 is an equidigital number, since it uses as much as digits as its factorization.

2606749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9890.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 2606749 is about 1614.5429693879. The cubic root of 2606749 is about 137.6257626237.

The spelling of 2606749 in words is "two million, six hundred six thousand, seven hundred forty-nine".