144640634 has 8 divisors (see below), whose sum is σ = 219067680. Its totient is φ = 71618076.

The previous prime is 144640633. The next prime is 144640663. The reversal of 144640634 is 436046441.

144640634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 144640634.

It is not an unprimeable number, because it can be changed into a prime (144640631) 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, 350864 + ... + 351275.

It is an arithmetic number, because the mean of its divisors is an integer number (27383460).

Almost surely, 2^144640634 is an apocalyptic number.

144640634 is a deficient number, since it is larger than the sum of its proper divisors (74427046).

144640634 is a wasteful number, since it uses less digits than its factorization.

144640634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702244.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 144640634 is about 12026.6634608274. The cubic root of 144640634 is about 524.9244142127.

The spelling of 144640634 in words is "one hundred forty-four million, six hundred forty thousand, six hundred thirty-four".