6693428761 has 4 divisors (see below), whose sum is σ = 6693601572. Its totient is φ = 6693255952.

The previous prime is 6693428713. The next prime is 6693428773. The reversal of 6693428761 is 1678243966.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6126036361 + 567392400 = 78269^2 + 23820^2 .

It is a cyclic number.

It is not a de Polignac number, because 6693428761 - 2¹⁹ = 6692904473 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6693428699 and 6693428708.

It is not an unprimeable number, because it can be changed into a prime (6693423761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1515 + ... + 115711.

It is an arithmetic number, because the mean of its divisors is an integer number (1673400393).

Almost surely, 2^6693428761 is an apocalyptic number.

It is an amenable number.

6693428761 is a deficient number, since it is larger than the sum of its proper divisors (172811).

6693428761 is a wasteful number, since it uses less digits than its factorization.

6693428761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172810.

The product of its digits is 2612736, while the sum is 52.

The square root of 6693428761 is about 81813.3776408235. The cubic root of 6693428761 is about 1884.5871048594.

The spelling of 6693428761 in words is "six billion, six hundred ninety-three million, four hundred twenty-eight thousand, seven hundred sixty-one".