2705247 has 6 divisors (see below), whose sum is σ = 3907592. Its totient is φ = 1803492.

The previous prime is 2705243. The next prime is 2705249. The reversal of 2705247 is 7425072.

It is not a de Polignac number, because 2705247 - 2² = 2705243 is a prime.

It is a super-2 number, since 2×2705247² = 14636722662018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2705247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2705243) 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 5 ways as a sum of consecutive naturals, for example, 150283 + ... + 150300.

2^2705247 is an apocalyptic number.

2705247 is a deficient number, since it is larger than the sum of its proper divisors (1202345).

2705247 is a wasteful number, since it uses less digits than its factorization.

2705247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300589 (or 300586 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 2705247 is about 1644.7635088365. The cubic root of 2705247 is about 139.3378081838.

The spelling of 2705247 in words is "two million, seven hundred five thousand, two hundred forty-seven".