162288666 has 12 divisors (see below), whose sum is σ = 351625482. Its totient is φ = 54096216.

The previous prime is 162288661. The next prime is 162288761. The reversal of 162288666 is 666882261.

It can be written as a sum of positive squares in only one way, i.e., 143496441 + 18792225 = 11979^2 + 4335^2 .

It is a super-2 number, since 2×162288666² = 52675222224119112, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (162288661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4508001 + ... + 4508036.

Almost surely, 2^162288666 is an apocalyptic number.

162288666 is an abundant number, since it is smaller than the sum of its proper divisors (189336816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

162288666 is a wasteful number, since it uses less digits than its factorization.

162288666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9016045 (or 9016042 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 162288666 is about 12739.2568857057. The cubic root of 162288666 is about 545.4597764195.

The spelling of 162288666 in words is "one hundred sixty-two million, two hundred eighty-eight thousand, six hundred sixty-six".