205675864 has 16 divisors (see below), whose sum is σ = 387954000. Its totient is φ = 102221472.

The previous prime is 205675831. The next prime is 205675871. The reversal of 205675864 is 468576502.

It is a super-2 number, since 2×205675864² = 84605122064292992, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 205675864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75639 + ... + 78310.

It is an arithmetic number, because the mean of its divisors is an integer number (24247125).

Almost surely, 2^205675864 is an apocalyptic number.

It is an amenable number.

205675864 is a deficient number, since it is larger than the sum of its proper divisors (182278136).

205675864 is a wasteful number, since it uses less digits than its factorization.

205675864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154122 (or 154118 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The square root of 205675864 is about 14341.4038364450. The cubic root of 205675864 is about 590.2841339474.

The spelling of 205675864 in words is "two hundred five million, six hundred seventy-five thousand, eight hundred sixty-four".