205070705 has 32 divisors (see below), whose sum is σ = 298771200. Its totient is φ = 131991552.

The previous prime is 205070699. The next prime is 205070717. The reversal of 205070705 is 507070502.

It is not a de Polignac number, because 205070705 - 2⁶ = 205070641 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73781 + ... + 76509.

It is an arithmetic number, because the mean of its divisors is an integer number (9336600).

Almost surely, 2^205070705 is an apocalyptic number.

It is an amenable number.

205070705 is a deficient number, since it is larger than the sum of its proper divisors (93700495).

205070705 is a wasteful number, since it uses less digits than its factorization.

205070705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873.

The product of its (nonzero) digits is 2450, while the sum is 26.

The square root of 205070705 is about 14320.2899761143. The cubic root of 205070705 is about 589.7046352680.

The spelling of 205070705 in words is "two hundred five million, seventy thousand, seven hundred five".