165650063 has 4 divisors (see below), whose sum is σ = 168122520. Its totient is φ = 163177608.

The previous prime is 165650033. The next prime is 165650099. The reversal of 165650063 is 360056561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 360056561 = 3511 ⋅102551.

It is a cyclic number.

It is not a de Polignac number, because 165650063 - 2¹² = 165645967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165650033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1236128 + ... + 1236261.

It is an arithmetic number, because the mean of its divisors is an integer number (42030630).

Almost surely, 2^165650063 is an apocalyptic number.

165650063 is a deficient number, since it is larger than the sum of its proper divisors (2472457).

165650063 is an equidigital number, since it uses as much as digits as its factorization.

165650063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472456.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 165650063 is about 12870.5113729020. The cubic root of 165650063 is about 549.2000083018.

The spelling of 165650063 in words is "one hundred sixty-five million, six hundred fifty thousand, sixty-three".