143620769 has 2 divisors, whose sum is σ = 143620770. Its totient is φ = 143620768.

The previous prime is 143620751. The next prime is 143620783. The reversal of 143620769 is 967026341.

143620769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140730769 + 2890000 = 11863^2 + 1700^2 .

It is an emirp because it is prime and its reverse (967026341) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143620769 is a prime.

It is a super-2 number, since 2×143620769² = 41253850576302722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (143620739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71810384 + 71810385.

It is an arithmetic number, because the mean of its divisors is an integer number (71810385).

Almost surely, 2^143620769 is an apocalyptic number.

It is an amenable number.

143620769 is a deficient number, since it is larger than the sum of its proper divisors (1).

143620769 is an equidigital number, since it uses as much as digits as its factorization.

143620769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 143620769 is about 11984.1882912444. The cubic root of 143620769 is about 523.6877510068.

The spelling of 143620769 in words is "one hundred forty-three million, six hundred twenty thousand, seven hundred sixty-nine".