200645834 has 4 divisors (see below), whose sum is σ = 300968754. Its totient is φ = 100322916.

The previous prime is 200645821. The next prime is 200645839. The reversal of 200645834 is 438546002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 191961025 + 8684809 = 13855^2 + 2947^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 200645834.

It is not an unprimeable number, because it can be changed into a prime (200645839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50161457 + ... + 50161460.

Almost surely, 2^200645834 is an apocalyptic number.

200645834 is a deficient number, since it is larger than the sum of its proper divisors (100322920).

200645834 is a wasteful number, since it uses less digits than its factorization.

200645834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100322919.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 200645834 is about 14164.9509000208. The cubic root of 200645834 is about 585.4323479837.

The spelling of 200645834 in words is "two hundred million, six hundred forty-five thousand, eight hundred thirty-four".