165211662 has 64 divisors (see below), whose sum is σ = 413342208. Its totient is φ = 42768000.

The previous prime is 165211649. The next prime is 165211703. The reversal of 165211662 is 266112561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 249612 + ... + 250272.

It is an arithmetic number, because the mean of its divisors is an integer number (6458472).

Almost surely, 2^165211662 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165211662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206671104).

165211662 is an abundant number, since it is smaller than the sum of its proper divisors (248130546).

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

165211662 is a wasteful number, since it uses less digits than its factorization.

165211662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225.

The product of its digits is 4320, while the sum is 30.

The square root of 165211662 is about 12853.4688703089. The cubic root of 165211662 is about 548.7150853577.

The spelling of 165211662 in words is "one hundred sixty-five million, two hundred eleven thousand, six hundred sixty-two".