662008669 has 12 divisors (see below), whose sum is σ = 770909724. Its totient is φ = 566833344.

The previous prime is 662008667. The next prime is 662008681. The reversal of 662008669 is 966800266.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 58323769 + 603684900 = 7637^2 + 24570^2 .

It is not a de Polignac number, because 662008669 - 2¹ = 662008667 is a prime.

It is a super-2 number, since 2×662008669² = 876510955662303122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662008663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42969 + ... + 56305.

It is an arithmetic number, because the mean of its divisors is an integer number (64242477).

Almost surely, 2^662008669 is an apocalyptic number.

It is an amenable number.

662008669 is a deficient number, since it is larger than the sum of its proper divisors (108901055).

662008669 is a wasteful number, since it uses less digits than its factorization.

662008669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14364 (or 14357 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 662008669 is about 25729.5291251123. The cubic root of 662008669 is about 871.5411398675.

The spelling of 662008669 in words is "six hundred sixty-two million, eight thousand, six hundred sixty-nine".