6629705791 has 2 divisors, whose sum is σ = 6629705792. Its totient is φ = 6629705790.

The previous prime is 6629705767. The next prime is 6629705807. The reversal of 6629705791 is 1975079266.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6629705791 - 2⁹ = 6629705279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6629705191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3314852895 + 3314852896.

It is an arithmetic number, because the mean of its divisors is an integer number (3314852896).

Almost surely, 2^6629705791 is an apocalyptic number.

6629705791 is a deficient number, since it is larger than the sum of its proper divisors (1).

6629705791 is an equidigital number, since it uses as much as digits as its factorization.

6629705791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1428840, while the sum is 52.

The square root of 6629705791 is about 81423.0052933445. The cubic root of 6629705791 is about 1878.5874585481.

The spelling of 6629705791 in words is "six billion, six hundred twenty-nine million, seven hundred five thousand, seven hundred ninety-one".