200661634 has 8 divisors (see below), whose sum is σ = 301942908. Its totient is φ = 100014000.

The previous prime is 200661623. The next prime is 200661673. The reversal of 200661634 is 436166002.

It can be written as a sum of positive squares in 2 ways, for example, as 193126609 + 7535025 = 13897^2 + 2745^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157617 + ... + 158884.

Almost surely, 2^200661634 is an apocalyptic number.

200661634 is a deficient number, since it is larger than the sum of its proper divisors (101281274).

200661634 is a wasteful number, since it uses less digits than its factorization.

200661634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316820.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 200661634 is about 14165.5086036471. The cubic root of 200661634 is about 585.4477143437.

It can be divided in two parts, 200661 and 634, that added together give a triangular number (201295 = T₆₃₄).

The spelling of 200661634 in words is "two hundred million, six hundred sixty-one thousand, six hundred thirty-four".