205993475 has 12 divisors (see below), whose sum is σ = 256389840. Its totient is φ = 164176800.

The previous prime is 205993453. The next prime is 205993477. The reversal of 205993475 is 574399502.

It is not a de Polignac number, because 205993475 - 2¹² = 205989379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205993477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8591 + ... + 22040.

It is an arithmetic number, because the mean of its divisors is an integer number (21365820).

Almost surely, 2^205993475 is an apocalyptic number.

205993475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

205993475 is a deficient number, since it is larger than the sum of its proper divisors (50396365).

205993475 is a wasteful number, since it uses less digits than its factorization.

205993475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30910 (or 30905 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 44.

The square root of 205993475 is about 14352.4727834614. The cubic root of 205993475 is about 590.5878226555.

The spelling of 205993475 in words is "two hundred five million, nine hundred ninety-three thousand, four hundred seventy-five".