687422067 has 4 divisors (see below), whose sum is σ = 916562760. Its totient is φ = 458281376.

The previous prime is 687422051. The next prime is 687422083. The reversal of 687422067 is 760224786.

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

It is an interprime number because it is at equal distance from previous prime (687422051) and next prime (687422083).

It is a cyclic number.

It is not a de Polignac number, because 687422067 - 2⁴ = 687422051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (687422017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114570342 + ... + 114570347.

It is an arithmetic number, because the mean of its divisors is an integer number (229140690).

Almost surely, 2^687422067 is an apocalyptic number.

687422067 is a deficient number, since it is larger than the sum of its proper divisors (229140693).

687422067 is a wasteful number, since it uses less digits than its factorization.

687422067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229140692.

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 687422067 is about 26218.7350381364. The cubic root of 687422067 is about 882.5537334032.

The spelling of 687422067 in words is "six hundred eighty-seven million, four hundred twenty-two thousand, sixty-seven".