6997787907 has 8 divisors (see below), whose sum is σ = 10178600640. Its totient is φ = 4241083560.

The previous prime is 6997787897. The next prime is 6997787921. The reversal of 6997787907 is 7097877996.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6997787907 - 2¹⁰ = 6997786883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6997787947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106027057 + ... + 106027122.

It is an arithmetic number, because the mean of its divisors is an integer number (1272325080).

Almost surely, 2^6997787907 is an apocalyptic number.

6997787907 is a deficient number, since it is larger than the sum of its proper divisors (3180812733).

6997787907 is a wasteful number, since it uses less digits than its factorization.

6997787907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212054193.

The product of its (nonzero) digits is 84015792, while the sum is 69.

The square root of 6997787907 is about 83652.7818246351. The cubic root of 6997787907 is about 1912.7296576532.

The spelling of 6997787907 in words is "six billion, nine hundred ninety-seven million, seven hundred eighty-seven thousand, nine hundred seven".