766886429 has 2 divisors, whose sum is σ = 766886430. Its totient is φ = 766886428.

The previous prime is 766886387. The next prime is 766886431. The reversal of 766886429 is 924688667.

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., 746546329 + 20340100 = 27323^2 + 4510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-766886429 is a prime.

It is a super-2 number, since 2×766886429² = 1176229589968744082, which contains 22 as substring.

Together with 766886431, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766886459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383443214 + 383443215.

It is an arithmetic number, because the mean of its divisors is an integer number (383443215).

Almost surely, 2^766886429 is an apocalyptic number.

It is an amenable number.

766886429 is a deficient number, since it is larger than the sum of its proper divisors (1).

766886429 is an equidigital number, since it uses as much as digits as its factorization.

766886429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6967296, while the sum is 56.

The square root of 766886429 is about 27692.7143667789. The cubic root of 766886429 is about 915.3285686331.

The spelling of 766886429 in words is "seven hundred sixty-six million, eight hundred eighty-six thousand, four hundred twenty-nine".