144375661 has 8 divisors (see below), whose sum is σ = 152570880. Its totient is φ = 136240128.

The previous prime is 144375643. The next prime is 144375683. The reversal of 144375661 is 166573441.

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 144375661 - 2²¹ = 142278509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144375661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144375641) 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, 9901 + ... + 19666.

It is an arithmetic number, because the mean of its divisors is an integer number (19071360).

Almost surely, 2^144375661 is an apocalyptic number.

It is an amenable number.

144375661 is a deficient number, since it is larger than the sum of its proper divisors (8195219).

144375661 is a wasteful number, since it uses less digits than its factorization.

144375661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29843.

The product of its digits is 60480, while the sum is 37.

The square root of 144375661 is about 12015.6423465414. The cubic root of 144375661 is about 524.6036748860.

The spelling of 144375661 in words is "one hundred forty-four million, three hundred seventy-five thousand, six hundred sixty-one".