144696857 has 2 divisors, whose sum is σ = 144696858. Its totient is φ = 144696856.

The previous prime is 144696833. The next prime is 144696889. The reversal of 144696857 is 758696441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144696841 + 16 = 12029^2 + 4^2 .

It is an emirp because it is prime and its reverse (758696441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144696857 - 2¹⁰ = 144695833 is a prime.

It is a Chen prime.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (144696817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72348428 + 72348429.

It is an arithmetic number, because the mean of its divisors is an integer number (72348429).

Almost surely, 2^144696857 is an apocalyptic number.

It is an amenable number.

144696857 is a deficient number, since it is larger than the sum of its proper divisors (1).

144696857 is an equidigital number, since it uses as much as digits as its factorization.

144696857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 50.

The square root of 144696857 is about 12029.0006650594. Note that the first 3 decimals coincide. The cubic root of 144696857 is about 524.9924195429.

The spelling of 144696857 in words is "one hundred forty-four million, six hundred ninety-six thousand, eight hundred fifty-seven".