165127640 has 32 divisors (see below), whose sum is σ = 373006080. Its totient is φ = 65789952.

The previous prime is 165127637. The next prime is 165127661. The reversal of 165127640 is 46721561.

It is a junction number, because it is equal to n+sod(n) for n = 165127597 and 165127606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2249 + ... + 18311.

It is an arithmetic number, because the mean of its divisors is an integer number (11656440).

Almost surely, 2^165127640 is an apocalyptic number.

165127640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165127640 is an abundant number, since it is smaller than the sum of its proper divisors (207878440).

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

165127640 is a wasteful number, since it uses less digits than its factorization.

165127640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16331 (or 16327 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 165127640 is about 12850.1999984436. The cubic root of 165127640 is about 548.6220492360.

The spelling of 165127640 in words is "one hundred sixty-five million, one hundred twenty-seven thousand, six hundred forty".