687222669 has 8 divisors (see below), whose sum is σ = 1047196480. Its totient is φ = 392698656.

The previous prime is 687222661. The next prime is 687222677. The reversal of 687222669 is 966222786.

It is an interprime number because it is at equal distance from previous prime (687222661) and next prime (687222677).

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

It is not a de Polignac number, because 687222669 - 2³ = 687222661 is a prime.

It is a super-2 number, since 2×687222669² = 944549993574967122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687222661) 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 7 ways as a sum of consecutive naturals, for example, 16362424 + ... + 16362465.

It is an arithmetic number, because the mean of its divisors is an integer number (130899560).

Almost surely, 2^687222669 is an apocalyptic number.

It is an amenable number.

687222669 is a deficient number, since it is larger than the sum of its proper divisors (359973811).

687222669 is a wasteful number, since it uses less digits than its factorization.

687222669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32724899.

The product of its digits is 870912, while the sum is 48.

The square root of 687222669 is about 26214.9321761472. The cubic root of 687222669 is about 882.4683921087.

The spelling of 687222669 in words is "six hundred eighty-seven million, two hundred twenty-two thousand, six hundred sixty-nine".