6629436797 has 4 divisors (see below), whose sum is σ = 6647210460. Its totient is φ = 6611663136.

The previous prime is 6629436791. The next prime is 6629436823. The reversal of 6629436797 is 7976349266.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7976349266 = 2 ⋅3988174633.

It can be written as a sum of positive squares in 2 ways, for example, as 2646690916 + 3982745881 = 51446^2 + 63109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6629436797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6629436791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8886272 + ... + 8887017.

It is an arithmetic number, because the mean of its divisors is an integer number (1661802615).

Almost surely, 2^6629436797 is an apocalyptic number.

It is an amenable number.

6629436797 is a deficient number, since it is larger than the sum of its proper divisors (17773663).

6629436797 is a wasteful number, since it uses less digits than its factorization.

6629436797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17773662.

The product of its digits is 20575296, while the sum is 59.

The square root of 6629436797 is about 81421.3534461323. The cubic root of 6629436797 is about 1878.5620509053.

The spelling of 6629436797 in words is "six billion, six hundred twenty-nine million, four hundred thirty-six thousand, seven hundred ninety-seven".