200690664487 has 4 divisors (see below), whose sum is σ = 201126002616. Its totient is φ = 200255326360.

The previous prime is 200690664443. The next prime is 200690664491. The reversal of 200690664487 is 784466096002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 200690664487 - 2¹⁹ = 200690140199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200690664437) 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 3 ways as a sum of consecutive naturals, for example, 217668373 + ... + 217669294.

It is an arithmetic number, because the mean of its divisors is an integer number (50281500654).

Almost surely, 2^200690664487 is an apocalyptic number.

200690664487 is a deficient number, since it is larger than the sum of its proper divisors (435338129).

200690664487 is an equidigital number, since it uses as much as digits as its factorization.

200690664487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435338128.

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 200690664487 in words is "two hundred billion, six hundred ninety million, six hundred sixty-four thousand, four hundred eighty-seven".