147720165 has 16 divisors (see below), whose sum is σ = 238056000. Its totient is φ = 78216192.

The previous prime is 147720161. The next prime is 147720173. The reversal of 147720165 is 561027741.

147720165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 147720165 - 2² = 147720161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147720161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33340 + ... + 37509.

It is an arithmetic number, because the mean of its divisors is an integer number (14878500).

Almost surely, 2^147720165 is an apocalyptic number.

147720165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

147720165 is a deficient number, since it is larger than the sum of its proper divisors (90335835).

147720165 is a wasteful number, since it uses less digits than its factorization.

147720165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70996.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 147720165 is about 12154.0184712711. The cubic root of 147720165 is about 528.6236568622.

The spelling of 147720165 in words is "one hundred forty-seven million, seven hundred twenty thousand, one hundred sixty-five".