202664661 has 12 divisors (see below), whose sum is σ = 282481248. Its totient is φ = 129234424.

The previous prime is 202664653. The next prime is 202664663. The reversal of 202664661 is 166466202.

It is not a de Polignac number, because 202664661 - 2³ = 202664653 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202664663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62265 + ... + 65438.

It is an arithmetic number, because the mean of its divisors is an integer number (23540104).

Almost surely, 2^202664661 is an apocalyptic number.

It is an amenable number.

202664661 is a deficient number, since it is larger than the sum of its proper divisors (79816587).

202664661 is a wasteful number, since it uses less digits than its factorization.

202664661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127752 (or 127729 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 202664661 is about 14236.0338929071. The cubic root of 202664661 is about 587.3892699718.

The spelling of 202664661 in words is "two hundred two million, six hundred sixty-four thousand, six hundred sixty-one".