997500165 has 8 divisors (see below), whose sum is σ = 1596000288. Its totient is φ = 532000080.

The previous prime is 997500157. The next prime is 997500167. The reversal of 997500165 is 561005799.

997500165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 997500165 - 2³ = 997500157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997500167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33249991 + ... + 33250020.

It is an arithmetic number, because the mean of its divisors is an integer number (199500036).

Almost surely, 2^997500165 is an apocalyptic number.

It is an amenable number.

997500165 is a deficient number, since it is larger than the sum of its proper divisors (598500123).

997500165 is a wasteful number, since it uses less digits than its factorization.

997500165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66500019.

The product of its (nonzero) digits is 85050, while the sum is 42.

The square root of 997500165 is about 31583.2260068537. The cubic root of 997500165 is about 999.1660263480.

The spelling of 997500165 in words is "nine hundred ninety-seven million, five hundred thousand, one hundred sixty-five".