144674865 has 12 divisors (see below), whose sum is σ = 250769844. Its totient is φ = 77159904.

The previous prime is 144674851. The next prime is 144674869. The reversal of 144674865 is 568476441.

It can be written as a sum of positive squares in 2 ways, for example, as 87385104 + 57289761 = 9348^2 + 7569^2 .

It is not a de Polignac number, because 144674865 - 2⁶ = 144674801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 3214997 = 144674865 / (1 + 4 + 4 + 6 + 7 + 4 + 8 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 144674865.

It is not an unprimeable number, because it can be changed into a prime (144674869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1607454 + ... + 1607543.

It is an arithmetic number, because the mean of its divisors is an integer number (20897487).

Almost surely, 2^144674865 is an apocalyptic number.

144674865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144674865 is a deficient number, since it is larger than the sum of its proper divisors (106094979).

144674865 is a wasteful number, since it uses less digits than its factorization.

144674865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215008 (or 3215005 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 144674865 is about 12028.0865061738. The cubic root of 144674865 is about 524.9658209041.

The spelling of 144674865 in words is "one hundred forty-four million, six hundred seventy-four thousand, eight hundred sixty-five".