144466621 has 8 divisors (see below), whose sum is σ = 155687000. Its totient is φ = 133261632.

The previous prime is 144466583. The next prime is 144466643. The reversal of 144466621 is 126664441.

144466621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 202500 + 144264121 = 450^2 + 12011^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 144466621 - 2¹⁹ = 143942333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144466121) 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, 22255 + ... + 28003.

It is an arithmetic number, because the mean of its divisors is an integer number (19460875).

Almost surely, 2^144466621 is an apocalyptic number.

It is an amenable number.

144466621 is a deficient number, since it is larger than the sum of its proper divisors (11220379).

144466621 is a wasteful number, since it uses less digits than its factorization.

144466621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7695.

The product of its digits is 27648, while the sum is 34.

The square root of 144466621 is about 12019.4268166165. The cubic root of 144466621 is about 524.7138225667.

The spelling of 144466621 in words is "one hundred forty-four million, four hundred sixty-six thousand, six hundred twenty-one".