144898065 has 120 divisors (see below), whose sum is σ = 294944760. Its totient is φ = 67931136.

The previous prime is 144898063. The next prime is 144898093. The reversal of 144898065 is 560898441.

It can be written as a sum of positive squares in 12 ways, for example, as 75742209 + 69155856 = 8703^2 + 8316^2 .

It is not a de Polignac number, because 144898065 - 2¹ = 144898063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 144898065.

It is not an unprimeable number, because it can be changed into a prime (144898063) by changing a digit.

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 119 ways as a sum of consecutive naturals, for example, 1984869 + ... + 1984941.

It is an arithmetic number, because the mean of its divisors is an integer number (2457873).

Almost surely, 2^144898065 is an apocalyptic number.

144898065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144898065 is an abundant number, since it is smaller than the sum of its proper divisors (150046695).

144898065 is a wasteful number, since it uses less digits than its factorization.

144898065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 144898065 is about 12037.3612141532. The cubic root of 144898065 is about 525.2356493136.

The spelling of 144898065 in words is "one hundred forty-four million, eight hundred ninety-eight thousand, sixty-five".