165667612 has 48 divisors (see below), whose sum is σ = 339292800. Its totient is φ = 69975360.

The previous prime is 165667609. The next prime is 165667613. The reversal of 165667612 is 216766561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165667613) 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 in 15 ways as a sum of consecutive naturals, for example, 42439 + ... + 46177.

It is an arithmetic number, because the mean of its divisors is an integer number (7068600).

Almost surely, 2^165667612 is an apocalyptic number.

It is an amenable number.

165667612 is an abundant number, since it is smaller than the sum of its proper divisors (173625188).

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

165667612 is a wasteful number, since it uses less digits than its factorization.

165667612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3826 (or 3824 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 165667612 is about 12871.1931070900. The cubic root of 165667612 is about 549.2194017357.

The spelling of 165667612 in words is "one hundred sixty-five million, six hundred sixty-seven thousand, six hundred twelve".