144466661 has 4 divisors (see below), whose sum is σ = 149448300. Its totient is φ = 139485024.

The previous prime is 144466643. The next prime is 144466717. The reversal of 144466661 is 166664441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48916036 + 95550625 = 6994^2 + 9775^2 .

It is a cyclic number.

It is not a de Polignac number, because 144466661 - 2¹⁸ = 144204517 is a prime.

It is a super-2 number, since 2×144466661² = 41741232280977842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144466061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2490776 + ... + 2490833.

It is an arithmetic number, because the mean of its divisors is an integer number (37362075).

Almost surely, 2^144466661 is an apocalyptic number.

It is an amenable number.

144466661 is a deficient number, since it is larger than the sum of its proper divisors (4981639).

144466661 is an equidigital number, since it uses as much as digits as its factorization.

144466661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4981638.

The product of its digits is 82944, while the sum is 38.

The square root of 144466661 is about 12019.4284805892. The cubic root of 144466661 is about 524.7138709944.

The spelling of 144466661 in words is "one hundred forty-four million, four hundred sixty-six thousand, six hundred sixty-one".