6697820707 has 4 divisors (see below), whose sum is σ = 6708855616. Its totient is φ = 6686785800.

The previous prime is 6697820699. The next prime is 6697820729. The reversal of 6697820707 is 7070287966.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6697820707 - 2³ = 6697820699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6697820807) 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, 5516544 + ... + 5517757.

It is an arithmetic number, because the mean of its divisors is an integer number (1677213904).

Almost surely, 2^6697820707 is an apocalyptic number.

6697820707 is a deficient number, since it is larger than the sum of its proper divisors (11034909).

6697820707 is a wasteful number, since it uses less digits than its factorization.

6697820707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11034908.

The product of its (nonzero) digits is 1778112, while the sum is 52.

The square root of 6697820707 is about 81840.2144853006. The cubic root of 6697820707 is about 1884.9992102945. Note that the first 3 decimals are identical.

The spelling of 6697820707 in words is "six billion, six hundred ninety-seven million, eight hundred twenty thousand, seven hundred seven".