200668391 has 32 divisors (see below), whose sum is σ = 271434240. Its totient is φ = 143539200.

The previous prime is 200668379. The next prime is 200668423. The reversal of 200668391 is 193866002.

It is not a de Polignac number, because 200668391 - 2⁶ = 200668327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200668691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51800 + ... + 55538.

It is an arithmetic number, because the mean of its divisors is an integer number (8482320).

Almost surely, 2^200668391 is an apocalyptic number.

200668391 is a deficient number, since it is larger than the sum of its proper divisors (70765849).

200668391 is a wasteful number, since it uses less digits than its factorization.

200668391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3815.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 200668391 is about 14165.7471034888. The cubic root of 200668391 is about 585.4542856477.

The spelling of 200668391 in words is "two hundred million, six hundred sixty-eight thousand, three hundred ninety-one".