165497712 has 80 divisors (see below), whose sum is σ = 440888448. Its totient is φ = 53464320.

The previous prime is 165497711. The next prime is 165497713. The reversal of 165497712 is 217794561.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (165497711) and next prime (165497713).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165497711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373363 + ... + 373805.

Almost surely, 2^165497712 is an apocalyptic number.

165497712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165497712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220444224).

165497712 is an abundant number, since it is smaller than the sum of its proper divisors (275390736).

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

165497712 is a wasteful number, since it uses less digits than its factorization.

165497712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 672 counting only the distinct ones).

The product of its digits is 105840, while the sum is 42.

The square root of 165497712 is about 12864.5914043160. The cubic root of 165497712 is about 549.0315873279.

The spelling of 165497712 in words is "one hundred sixty-five million, four hundred ninety-seven thousand, seven hundred twelve".