165061623 has 8 divisors (see below), whose sum is σ = 220996336. Its totient is φ = 109584000.

The previous prime is 165061571. The next prime is 165061651. The reversal of 165061623 is 326160561.

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

It is not a de Polignac number, because 165061623 - 2⁹ = 165061111 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 (165061123) 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, 113428 + ... + 114873.

It is an arithmetic number, because the mean of its divisors is an integer number (27624542).

Almost surely, 2^165061623 is an apocalyptic number.

165061623 is a deficient number, since it is larger than the sum of its proper divisors (55934713).

165061623 is a wasteful number, since it uses less digits than its factorization.

165061623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228545.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 165061623 is about 12847.6310267691. The cubic root of 165061623 is about 548.5489276001.

The spelling of 165061623 in words is "one hundred sixty-five million, sixty-one thousand, six hundred twenty-three".