165897340 has 36 divisors (see below), whose sum is σ = 405265896. Its totient is φ = 56878752.

The previous prime is 165897331. The next prime is 165897343. The reversal of 165897340 is 43798561.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165897343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83662 + ... + 85621.

It is an arithmetic number, because the mean of its divisors is an integer number (11257386).

Almost surely, 2^165897340 is an apocalyptic number.

165897340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165897340 is an abundant number, since it is smaller than the sum of its proper divisors (239368556).

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

165897340 is a wasteful number, since it uses less digits than its factorization.

165897340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169306 (or 169297 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 165897340 is about 12880.1141299291. The cubic root of 165897340 is about 549.4731483762.

The spelling of 165897340 in words is "one hundred sixty-five million, eight hundred ninety-seven thousand, three hundred forty".