200640451 has 8 divisors (see below), whose sum is σ = 223971264. Its totient is φ = 178158120.

The previous prime is 200640403. The next prime is 200640493. The reversal of 200640451 is 154046002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200640451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (200640151) 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 in 7 ways as a sum of consecutive naturals, for example, 211621 + ... + 212566.

It is an arithmetic number, because the mean of its divisors is an integer number (27996408).

Almost surely, 2^200640451 is an apocalyptic number.

200640451 is a deficient number, since it is larger than the sum of its proper divisors (23330813).

200640451 is a wasteful number, since it uses less digits than its factorization.

200640451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424241.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 200640451 is about 14164.7608874982. The cubic root of 200640451 is about 585.4271125390.

Adding to 200640451 its reverse (154046002), we get a palindrome (354686453).

The spelling of 200640451 in words is "two hundred million, six hundred forty thousand, four hundred fifty-one".