144870641 has 2 divisors, whose sum is σ = 144870642. Its totient is φ = 144870640.

The previous prime is 144870637. The next prime is 144870697. The reversal of 144870641 is 146078441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79584241 + 65286400 = 8921^2 + 8080^2 .

It is a cyclic number.

It is not a de Polignac number, because 144870641 - 2² = 144870637 is a prime.

It is not a weakly prime, because it can be changed into another prime (144870541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72435320 + 72435321.

It is an arithmetic number, because the mean of its divisors is an integer number (72435321).

Almost surely, 2^144870641 is an apocalyptic number.

It is an amenable number.

144870641 is a deficient number, since it is larger than the sum of its proper divisors (1).

144870641 is an equidigital number, since it uses as much as digits as its factorization.

144870641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 144870641 is about 12036.2220401586. Note that the first 3 decimals coincide. The cubic root of 144870641 is about 525.2025111410.

The spelling of 144870641 in words is "one hundred forty-four million, eight hundred seventy thousand, six hundred forty-one".