144356661 has 40 divisors (see below), whose sum is σ = 229570880. Its totient is φ = 90139392.

The previous prime is 144356651. The next prime is 144356687. The reversal of 144356661 is 166653441.

It is a happy number.

144356661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 144356661 - 2²⁵ = 110802229 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 (144356651) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 148800 + ... + 149766.

It is an arithmetic number, because the mean of its divisors is an integer number (5739272).

Almost surely, 2^144356661 is an apocalyptic number.

It is an amenable number.

144356661 is a deficient number, since it is larger than the sum of its proper divisors (85214219).

144356661 is an equidigital number, since it uses as much as digits as its factorization.

144356661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095 (or 1086 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 144356661 is about 12014.8516844778. The cubic root of 144356661 is about 524.5806610644.

The spelling of 144356661 in words is "one hundred forty-four million, three hundred fifty-six thousand, six hundred sixty-one".