144216645 has 8 divisors (see below), whose sum is σ = 230746656. Its totient is φ = 76915536.

The previous prime is 144216641. The next prime is 144216649. The reversal of 144216645 is 546612441.

It is an interprime number because it is at equal distance from previous prime (144216641) and next prime (144216649).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 144216645 - 2² = 144216641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144216641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4807207 + ... + 4807236.

It is an arithmetic number, because the mean of its divisors is an integer number (28843332).

Almost surely, 2^144216645 is an apocalyptic number.

144216645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144216645 is a deficient number, since it is larger than the sum of its proper divisors (86530011).

144216645 is an equidigital number, since it uses as much as digits as its factorization.

144216645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9614451.

The product of its digits is 23040, while the sum is 33.

The square root of 144216645 is about 12009.0234823653. The cubic root of 144216645 is about 524.4110038529.

The spelling of 144216645 in words is "one hundred forty-four million, two hundred sixteen thousand, six hundred forty-five".