765221141 has 2 divisors, whose sum is σ = 765221142. Its totient is φ = 765221140.

The previous prime is 765221131. The next prime is 765221159. The reversal of 765221141 is 141122567.

765221141 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 can be written as a sum of positive squares in only one way, i.e., 619512100 + 145709041 = 24890^2 + 12071^2 .

It is an emirp because it is prime and its reverse (141122567) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 765221141 - 2¹⁴ = 765204757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (765221131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382610570 + 382610571.

It is an arithmetic number, because the mean of its divisors is an integer number (382610571).

Almost surely, 2^765221141 is an apocalyptic number.

It is an amenable number.

765221141 is a deficient number, since it is larger than the sum of its proper divisors (1).

765221141 is an equidigital number, since it uses as much as digits as its factorization.

765221141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 29.

The square root of 765221141 is about 27662.6307678789. The cubic root of 765221141 is about 914.6655454954.

The spelling of 765221141 in words is "seven hundred sixty-five million, two hundred twenty-one thousand, one hundred forty-one".