2729705 has 16 divisors (see below), whose sum is σ = 3691008. Its totient is φ = 1920000.

The previous prime is 2729681. The next prime is 2729717. The reversal of 2729705 is 5079272.

It is not a de Polignac number, because 2729705 - 2¹⁶ = 2664169 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 905 + ... + 2505.

It is an arithmetic number, because the mean of its divisors is an integer number (230688).

2^2729705 is an apocalyptic number.

It is an amenable number.

2729705 is a deficient number, since it is larger than the sum of its proper divisors (961303).

2729705 is a wasteful number, since it uses less digits than its factorization.

2729705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 2729705 is about 1652.1818907130. The cubic root of 2729705 is about 139.7564643607.

The spelling of 2729705 in words is "two million, seven hundred twenty-nine thousand, seven hundred five".