2660149 has 4 divisors (see below), whose sum is σ = 2703820. Its totient is φ = 2616480.

The previous prime is 2660137. The next prime is 2660173. The reversal of 2660149 is 9410662.

2660149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122500 + 2537649 = 350^2 + 1593^2 .

It is a cyclic number.

It is not a de Polignac number, because 2660149 - 2⁵ = 2660117 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 (2660179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21744 + ... + 21865.

It is an arithmetic number, because the mean of its divisors is an integer number (675955).

2^2660149 is an apocalyptic number.

It is an amenable number.

2660149 is a deficient number, since it is larger than the sum of its proper divisors (43671).

2660149 is an equidigital number, since it uses as much as digits as its factorization.

2660149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43670.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 2660149 is about 1630.9963212711. The cubic root of 2660149 is about 138.5591852596.

It can be divided in two parts, 2660 and 149, that added together give a square (2809 = 53²).

The spelling of 2660149 in words is "two million, six hundred sixty thousand, one hundred forty-nine".