144022665 has 16 divisors (see below), whose sum is σ = 240455808. Its totient is φ = 73472256.

The previous prime is 144022663. The next prime is 144022721. The reversal of 144022665 is 566220441.

It is not a de Polignac number, because 144022665 - 2¹ = 144022663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144022661) 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, 208384 + ... + 209073.

It is an arithmetic number, because the mean of its divisors is an integer number (15028488).

Almost surely, 2^144022665 is an apocalyptic number.

144022665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144022665 is a deficient number, since it is larger than the sum of its proper divisors (96433143).

144022665 is a wasteful number, since it uses less digits than its factorization.

144022665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417488.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 144022665 is about 12000.9443378428. The cubic root of 144022665 is about 524.1757769842.

The spelling of 144022665 in words is "one hundred forty-four million, twenty-two thousand, six hundred sixty-five".