699661867 has 2 divisors, whose sum is σ = 699661868. Its totient is φ = 699661866.

The previous prime is 699661849. The next prime is 699661889. The reversal of 699661867 is 768166996.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-699661867 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (699661967) 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 as a sum of consecutive naturals, namely, 349830933 + 349830934.

It is an arithmetic number, because the mean of its divisors is an integer number (349830934).

Almost surely, 2^699661867 is an apocalyptic number.

699661867 is a deficient number, since it is larger than the sum of its proper divisors (1).

699661867 is an equidigital number, since it uses as much as digits as its factorization.

699661867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5878656, while the sum is 58.

The square root of 699661867 is about 26451.1222257204. The cubic root of 699661867 is about 887.7610122195.

The spelling of 699661867 in words is "six hundred ninety-nine million, six hundred sixty-one thousand, eight hundred sixty-seven".