662085869 has 2 divisors, whose sum is σ = 662085870. Its totient is φ = 662085868.

The previous prime is 662085847. The next prime is 662085877. The reversal of 662085869 is 968580266.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 609349225 + 52736644 = 24685^2 + 7262^2 .

It is a cyclic number.

It is not a de Polignac number, because 662085869 - 2¹² = 662081773 is a prime.

It is a super-2 number, since 2×662085869² = 876715395858970322, 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 (662085829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331042934 + 331042935.

It is an arithmetic number, because the mean of its divisors is an integer number (331042935).

Almost surely, 2^662085869 is an apocalyptic number.

It is an amenable number.

662085869 is a deficient number, since it is larger than the sum of its proper divisors (1).

662085869 is an equidigital number, since it uses as much as digits as its factorization.

662085869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The square root of 662085869 is about 25731.0293031585. The cubic root of 662085869 is about 871.5750167455.

The spelling of 662085869 in words is "six hundred sixty-two million, eighty-five thousand, eight hundred sixty-nine".