165350720 has 28 divisors (see below), whose sum is σ = 393742164. Its totient is φ = 66140160.

The previous prime is 165350671. The next prime is 165350761. The reversal of 165350720 is 27053561.

165350720 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 56190016 + 109160704 = 7496^2 + 10448^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258041 + ... + 258680.

Almost surely, 2^165350720 is an apocalyptic number.

165350720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165350720 is an abundant number, since it is smaller than the sum of its proper divisors (228391444).

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

165350720 is an equidigital number, since it uses as much as digits as its factorization.

165350720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516738 (or 516728 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 165350720 is about 12858.8770893885. The cubic root of 165350720 is about 548.8689926210.

The spelling of 165350720 in words is "one hundred sixty-five million, three hundred fifty thousand, seven hundred twenty".