205672965 has 8 divisors (see below), whose sum is σ = 329076768. Its totient is φ = 109692240.

The previous prime is 205672963. The next prime is 205672991. The reversal of 205672965 is 569276502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205672965 - 2¹ = 205672963 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205672963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6855751 + ... + 6855780.

It is an arithmetic number, because the mean of its divisors is an integer number (41134596).

Almost surely, 2^205672965 is an apocalyptic number.

It is an amenable number.

205672965 is a deficient number, since it is larger than the sum of its proper divisors (123403803).

205672965 is a wasteful number, since it uses less digits than its factorization.

205672965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13711539.

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 205672965 is about 14341.3027650908. The cubic root of 205672965 is about 590.2813605840.

It can be divided in two parts, 20567 and 2965, that added together give a palindrome (23532).

The spelling of 205672965 in words is "two hundred five million, six hundred seventy-two thousand, nine hundred sixty-five".