165667272 has 16 divisors (see below), whose sum is σ = 414168240. Its totient is φ = 55222416.

The previous prime is 165667267. The next prime is 165667273. The reversal of 165667272 is 272766561.

It is not an unprimeable number, because it can be changed into a prime (165667273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3451378 + ... + 3451425.

It is an arithmetic number, because the mean of its divisors is an integer number (25885515).

Almost surely, 2^165667272 is an apocalyptic number.

165667272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165667272 is an abundant number, since it is smaller than the sum of its proper divisors (248500968).

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

165667272 is a wasteful number, since it uses less digits than its factorization.

165667272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6902812 (or 6902808 counting only the distinct ones).

The product of its digits is 211680, while the sum is 42.

The square root of 165667272 is about 12871.1798992944. The cubic root of 165667272 is about 549.2190260140.

The spelling of 165667272 in words is "one hundred sixty-five million, six hundred sixty-seven thousand, two hundred seventy-two".