165487744 has 32 divisors (see below), whose sum is σ = 331933500. Its totient is φ = 82179072.

The previous prime is 165487727. The next prime is 165487759. The reversal of 165487744 is 447784561.

It can be written as a sum of positive squares in 2 ways, for example, as 146894400 + 18593344 = 12120^2 + 4312^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 165487694 and 165487703.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14734 + ... + 23410.

Almost surely, 2^165487744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165487744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165966750).

165487744 is an abundant number, since it is smaller than the sum of its proper divisors (166445756).

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

165487744 is an equidigital number, since it uses as much as digits as its factorization.

165487744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8840 (or 8828 counting only the distinct ones).

The product of its digits is 752640, while the sum is 46.

The square root of 165487744 is about 12864.2039784823. The cubic root of 165487744 is about 549.0205643019.

It can be divided in two parts, 1654 and 87744, that added together give a palindrome (89398).

The spelling of 165487744 in words is "one hundred sixty-five million, four hundred eighty-seven thousand, seven hundred forty-four".