165632620 has 48 divisors (see below), whose sum is σ = 361323648. Its totient is φ = 63728640.

The previous prime is 165632611. The next prime is 165632651. The reversal of 165632620 is 26236561.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58477 + ... + 61243.

It is an arithmetic number, because the mean of its divisors is an integer number (7527576).

Almost surely, 2^165632620 is an apocalyptic number.

165632620 is a gapful number since it is divisible by the number (10) 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 165632620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180661824).

165632620 is an abundant number, since it is smaller than the sum of its proper divisors (195691028).

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

165632620 is a wasteful number, since it uses less digits than its factorization.

165632620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890 (or 2888 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 165632620 is about 12869.8337207596. The cubic root of 165632620 is about 549.1807306514.

The spelling of 165632620 in words is "one hundred sixty-five million, six hundred thirty-two thousand, six hundred twenty".