766129061 has 2 divisors, whose sum is σ = 766129062. Its totient is φ = 766129060.

The previous prime is 766129027. The next prime is 766129069. The reversal of 766129061 is 160921667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 763472161 + 2656900 = 27631^2 + 1630^2 .

It is a cyclic number.

It is not a de Polignac number, because 766129061 - 2⁶ = 766128997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766129069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383064530 + 383064531.

It is an arithmetic number, because the mean of its divisors is an integer number (383064531).

Almost surely, 2^766129061 is an apocalyptic number.

It is an amenable number.

766129061 is a deficient number, since it is larger than the sum of its proper divisors (1).

766129061 is an equidigital number, since it uses as much as digits as its factorization.

766129061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 766129061 is about 27679.0364897335. The cubic root of 766129061 is about 915.0271468152.

The spelling of 766129061 in words is "seven hundred sixty-six million, one hundred twenty-nine thousand, sixty-one".