662642266 has 32 divisors (see below), whose sum is σ = 1169417088. Its totient is φ = 277631040.

The previous prime is 662642263. The next prime is 662642297. The reversal of 662642266 is 662246266.

It is a happy number.

It is a super-2 number, since 2×662642266² = 878189545379229512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (662642263) 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 15 ways as a sum of consecutive naturals, for example, 279960 + ... + 282316.

It is an arithmetic number, because the mean of its divisors is an integer number (36544284).

Almost surely, 2^662642266 is an apocalyptic number.

662642266 is a deficient number, since it is larger than the sum of its proper divisors (506774822).

662642266 is a wasteful number, since it uses less digits than its factorization.

662642266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3366.

The product of its digits is 248832, while the sum is 40.

The square root of 662642266 is about 25741.8388232076. The cubic root of 662642266 is about 871.8190968400.

The spelling of 662642266 in words is "six hundred sixty-two million, six hundred forty-two thousand, two hundred sixty-six".