165703664 has 20 divisors (see below), whose sum is σ = 366915504. Its totient is φ = 71015808.

The previous prime is 165703627. The next prime is 165703667. The reversal of 165703664 is 466307561.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165703667) 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, 739637 + ... + 739860.

Almost surely, 2^165703664 is an apocalyptic number.

165703664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

165703664 is an abundant number, since it is smaller than the sum of its proper divisors (201211840).

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

165703664 is a wasteful number, since it uses less digits than its factorization.

165703664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479512 (or 1479506 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 165703664 is about 12872.5935226744. The cubic root of 165703664 is about 549.2592385742.

The spelling of 165703664 in words is "one hundred sixty-five million, seven hundred three thousand, six hundred sixty-four".