766143533 has 2 divisors, whose sum is σ = 766143534. Its totient is φ = 766143532.

The previous prime is 766143493. The next prime is 766143557. The reversal of 766143533 is 335341667.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 744034729 + 22108804 = 27277^2 + 4702^2 .

It is a cyclic number.

It is not a de Polignac number, because 766143533 - 2²⁶ = 699034669 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766143563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383071766 + 383071767.

It is an arithmetic number, because the mean of its divisors is an integer number (383071767).

Almost surely, 2^766143533 is an apocalyptic number.

It is an amenable number.

766143533 is a deficient number, since it is larger than the sum of its proper divisors (1).

766143533 is an equidigital number, since it uses as much as digits as its factorization.

766143533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 38.

The square root of 766143533 is about 27679.2979137839. The cubic root of 766143533 is about 915.0329083290.

The spelling of 766143533 in words is "seven hundred sixty-six million, one hundred forty-three thousand, five hundred thirty-three".