816648667 has 2 divisors, whose sum is σ = 816648668. Its totient is φ = 816648666.

The previous prime is 816648661. The next prime is 816648673. The reversal of 816648667 is 766846618.

It is a happy number.

816648667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (816648661) and next prime (816648673).

It is a cyclic number.

It is not a de Polignac number, because 816648667 - 2²⁷ = 682430939 is a prime.

It is not a weakly prime, because it can be changed into another prime (816648661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408324333 + 408324334.

It is an arithmetic number, because the mean of its divisors is an integer number (408324334).

Almost surely, 2^816648667 is an apocalyptic number.

816648667 is a deficient number, since it is larger than the sum of its proper divisors (1).

816648667 is an equidigital number, since it uses as much as digits as its factorization.

816648667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2322432, while the sum is 52.

The square root of 816648667 is about 28577.0654021717. The cubic root of 816648667 is about 934.7132932790.

The spelling of 816648667 in words is "eight hundred sixteen million, six hundred forty-eight thousand, six hundred sixty-seven".