2705149 has 4 divisors (see below), whose sum is σ = 2798460. Its totient is φ = 2611840.

The previous prime is 2705147. The next prime is 2705189. The reversal of 2705149 is 9415072.

It is a happy number.

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 2229049 + 476100 = 1493^2 + 690^2 .

It is a cyclic number.

It is not a de Polignac number, because 2705149 - 2¹ = 2705147 is a prime.

It is a super-2 number, since 2×2705149² = 14635662224402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2705141) 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, 46612 + ... + 46669.

It is an arithmetic number, because the mean of its divisors is an integer number (699615).

2^2705149 is an apocalyptic number.

2705149 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2705149 is a deficient number, since it is larger than the sum of its proper divisors (93311).

2705149 is an equidigital number, since it uses as much as digits as its factorization.

2705149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93310.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 2705149 is about 1644.7337170497. The cubic root of 2705149 is about 139.3361256178.

The spelling of 2705149 in words is "two million, seven hundred five thousand, one hundred forty-nine".