205670101 has 48 divisors (see below), whose sum is σ = 269149440. Its totient is φ = 155675520.

The previous prime is 205670083. The next prime is 205670107. The reversal of 205670101 is 101076502.

It is not a de Polignac number, because 205670101 - 2²¹ = 203572949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205670107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2603380 + ... + 2603458.

It is an arithmetic number, because the mean of its divisors is an integer number (5607280).

Almost surely, 2^205670101 is an apocalyptic number.

It is an amenable number.

205670101 is a deficient number, since it is larger than the sum of its proper divisors (63479339).

205670101 is a wasteful number, since it uses less digits than its factorization.

205670101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 205670101 is about 14341.2029132845. The cubic root of 205670101 is about 590.2786206781.

The spelling of 205670101 in words is "two hundred five million, six hundred seventy thousand, one hundred one".