7766506829 has 2 divisors, whose sum is σ = 7766506830.
Its totient is φ = 7766506828.
The previous prime is 7766506799. The next prime is 7766506841. The reversal of 7766506829 is 9286056677.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 4585321225 + 3181185604 = 67715^2 + 56402^2
It is an emirp because it is prime and its reverse (9286056677) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-7766506829 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (7766506889) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3883253414 + 3883253415.
It is an arithmetic number, because the mean of its divisors is an integer number (3883253415).
Almost surely, 27766506829 is an apocalyptic number.
It is an amenable number.
7766506829 is a deficient number, since it is larger than the sum of its proper divisors (1).
7766506829 is an equidigital number, since it uses as much as digits as its factorization.
7766506829 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 7620480, while the sum is 56.
The square root of 7766506829 is about 88127.7869289817.
The cubic root of 7766506829 is about 1980.3498029220.
The spelling of 7766506829 in words is "seven billion, seven hundred sixty-six million, five hundred six thousand, eight hundred twenty-nine".