144630643 has 4 divisors (see below), whose sum is σ = 146034928. Its totient is φ = 143226360.

The previous prime is 144630623. The next prime is 144630649. The reversal of 144630643 is 346036441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346036441 = 67 ⋅5164723.

It is a cyclic number.

It is not a de Polignac number, because 144630643 - 2⁹ = 144630131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144630649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 701988 + ... + 702193.

It is an arithmetic number, because the mean of its divisors is an integer number (36508732).

Almost surely, 2^144630643 is an apocalyptic number.

144630643 is a deficient number, since it is larger than the sum of its proper divisors (1404285).

144630643 is a wasteful number, since it uses less digits than its factorization.

144630643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404284.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 144630643 is about 12026.2480849183. The cubic root of 144630643 is about 524.9123276124.

The spelling of 144630643 in words is "one hundred forty-four million, six hundred thirty thousand, six hundred forty-three".