2705669 has 4 divisors (see below), whose sum is σ = 2864844. Its totient is φ = 2546496.

The previous prime is 2705663. The next prime is 2705687. The reversal of 2705669 is 9665072.

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 1592644 + 1113025 = 1262^2 + 1055^2 .

It is a cyclic number.

It is not a de Polignac number, because 2705669 - 2⁸ = 2705413 is a prime.

It is a super-2 number, since 2×2705669² = 14641289475122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2705663) 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, 79562 + ... + 79595.

It is an arithmetic number, because the mean of its divisors is an integer number (716211).

2^2705669 is an apocalyptic number.

It is an amenable number.

2705669 is a deficient number, since it is larger than the sum of its proper divisors (159175).

2705669 is a wasteful number, since it uses less digits than its factorization.

2705669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159174.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 2705669 is about 1644.8917897540. The cubic root of 2705669 is about 139.3450530550.

The spelling of 2705669 in words is "two million, seven hundred five thousand, six hundred sixty-nine".