2661705 has 12 divisors (see below), whose sum is σ = 4613700. Its totient is φ = 1419552.

The previous prime is 2661689. The next prime is 2661731. The reversal of 2661705 is 5071662.

It can be written as a sum of positive squares in 2 ways, for example, as 2039184 + 622521 = 1428^2 + 789^2 .

It is not a de Polignac number, because 2661705 - 2⁴ = 2661689 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29530 + ... + 29619.

It is an arithmetic number, because the mean of its divisors is an integer number (384475).

2^2661705 is an apocalyptic number.

It is an amenable number.

2661705 is a deficient number, since it is larger than the sum of its proper divisors (1951995).

2661705 is a wasteful number, since it uses less digits than its factorization.

2661705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59160 (or 59157 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 2661705 is about 1631.4732605838. The cubic root of 2661705 is about 138.5861957854.

The spelling of 2661705 in words is "two million, six hundred sixty-one thousand, seven hundred five".