200537661 has 16 divisors (see below), whose sum is σ = 283737600. Its totient is φ = 125549568.

The previous prime is 200537611. The next prime is 200537707. The reversal of 200537661 is 166735002.

It is a de Polignac number, because none of the positive numbers 2^k-200537661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200537611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20325 + ... + 28533.

It is an arithmetic number, because the mean of its divisors is an integer number (17733600).

Almost surely, 2^200537661 is an apocalyptic number.

It is an amenable number.

200537661 is a deficient number, since it is larger than the sum of its proper divisors (83199939).

200537661 is a wasteful number, since it uses less digits than its factorization.

200537661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8708.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 200537661 is about 14161.1320522054. The cubic root of 200537661 is about 585.3271221802.

The spelling of 200537661 in words is "two hundred million, five hundred thirty-seven thousand, six hundred sixty-one".