3165621066 has 24 divisors (see below), whose sum is σ = 6884935200. Its totient is φ = 1051193256.

The previous prime is 3165621061. The next prime is 3165621073. The reversal of 3165621066 is 6601265613.

3165621066 is a `hidden beast` number, since 31 + 6 + 562 + 1 + 0 + 66 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3165621066.

It is not an unprimeable number, because it can be changed into a prime (3165621061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 329616 + ... + 339083.

It is an arithmetic number, because the mean of its divisors is an integer number (286872300).

Almost surely, 2^3165621066 is an apocalyptic number.

3165621066 is an abundant number, since it is smaller than the sum of its proper divisors (3719314134).

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

3165621066 is a wasteful number, since it uses less digits than its factorization.

3165621066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668970 (or 668967 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 3165621066 is about 56263.8522143658. The cubic root of 3165621066 is about 1468.3163759283.

Adding to 3165621066 its reverse (6601265613), we get a palindrome (9766886679).

The spelling of 3165621066 in words is "three billion, one hundred sixty-five million, six hundred twenty-one thousand, sixty-six".