144401687 has 2 divisors, whose sum is σ = 144401688. Its totient is φ = 144401686.

The previous prime is 144401681. The next prime is 144401749. The reversal of 144401687 is 786104441.

144401687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144401687 - 2⁴ = 144401671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144401681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72200843 + 72200844.

It is an arithmetic number, because the mean of its divisors is an integer number (72200844).

Almost surely, 2^144401687 is an apocalyptic number.

144401687 is a deficient number, since it is larger than the sum of its proper divisors (1).

144401687 is an equidigital number, since it uses as much as digits as its factorization.

144401687 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 144401687 is about 12016.7253026771. The cubic root of 144401687 is about 524.6351956996.

The spelling of 144401687 in words is "one hundred forty-four million, four hundred one thousand, six hundred eighty-seven".