690181067 has 2 divisors, whose sum is σ = 690181068. Its totient is φ = 690181066.

The previous prime is 690181057. The next prime is 690181069. The reversal of 690181067 is 760181096.

690181067 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 690181067 - 2⁸ = 690180811 is a prime.

Together with 690181069, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_35770718 and since 690181067 and 35770718 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 690181067.

It is not a weakly prime, because it can be changed into another prime (690181069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345090533 + 345090534.

It is an arithmetic number, because the mean of its divisors is an integer number (345090534).

Almost surely, 2^690181067 is an apocalyptic number.

690181067 is a deficient number, since it is larger than the sum of its proper divisors (1).

690181067 is an equidigital number, since it uses as much as digits as its factorization.

690181067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 690181067 is about 26271.2973984918. The cubic root of 690181067 is about 883.7328805851.

The spelling of 690181067 in words is "six hundred ninety million, one hundred eighty-one thousand, sixty-seven".