202116671 has 4 divisors (see below), whose sum is σ = 203455344. Its totient is φ = 200778000.

The previous prime is 202116667. The next prime is 202116679. The reversal of 202116671 is 176611202.

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 202116671 - 2² = 202116667 is a prime.

It is a super-2 number, since 2×202116671² = 81702297392244482, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 202116671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202116679) 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 3 ways as a sum of consecutive naturals, for example, 669110 + ... + 669411.

It is an arithmetic number, because the mean of its divisors is an integer number (50863836).

Almost surely, 2^202116671 is an apocalyptic number.

202116671 is a deficient number, since it is larger than the sum of its proper divisors (1338673).

202116671 is a wasteful number, since it uses less digits than its factorization.

202116671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338672.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 202116671 is about 14216.7742825157. The cubic root of 202116671 is about 586.8593732822.

Adding to 202116671 its reverse (176611202), we get a palindrome (378727873).

The spelling of 202116671 in words is "two hundred two million, one hundred sixteen thousand, six hundred seventy-one".