766539149 has 2 divisors, whose sum is σ = 766539150. Its totient is φ = 766539148.

The previous prime is 766539143. The next prime is 766539167. The reversal of 766539149 is 941935667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 431392900 + 335146249 = 20770^2 + 18307^2 .

It is a cyclic number.

It is not a de Polignac number, because 766539149 - 2²⁴ = 749761933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 766539097 and 766539106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766539143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383269574 + 383269575.

It is an arithmetic number, because the mean of its divisors is an integer number (383269575).

Almost surely, 2^766539149 is an apocalyptic number.

It is an amenable number.

766539149 is a deficient number, since it is larger than the sum of its proper divisors (1).

766539149 is an equidigital number, since it uses as much as digits as its factorization.

766539149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 50.

The square root of 766539149 is about 27686.4434155057. The cubic root of 766539149 is about 915.1903807225.

The spelling of 766539149 in words is "seven hundred sixty-six million, five hundred thirty-nine thousand, one hundred forty-nine".