202406669 has 2 divisors, whose sum is σ = 202406670. Its totient is φ = 202406668.

The previous prime is 202406663. The next prime is 202406683. The reversal of 202406669 is 966604202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197402500 + 5004169 = 14050^2 + 2237^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202406669 is a prime.

It is a super-2 number, since 2×202406669² = 81936919311351122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202406663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101203334 + 101203335.

It is an arithmetic number, because the mean of its divisors is an integer number (101203335).

Almost surely, 2^202406669 is an apocalyptic number.

It is an amenable number.

202406669 is a deficient number, since it is larger than the sum of its proper divisors (1).

202406669 is an equidigital number, since it uses as much as digits as its factorization.

202406669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 202406669 is about 14226.9697757463. The cubic root of 202406669 is about 587.1399153951.

The spelling of 202406669 in words is "two hundred two million, four hundred six thousand, six hundred sixty-nine".