687323066 has 8 divisors (see below), whose sum is σ = 1031566260. Its totient is φ = 343467648.

The previous prime is 687323047. The next prime is 687323093. The reversal of 687323066 is 660323786.

It can be written as a sum of positive squares in 2 ways, for example, as 577681225 + 109641841 = 24035^2 + 10471^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92471 + ... + 99626.

Almost surely, 2^687323066 is an apocalyptic number.

687323066 is a deficient number, since it is larger than the sum of its proper divisors (344243194).

687323066 is a wasteful number, since it uses less digits than its factorization.

687323066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193888.

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 687323066 is about 26216.8469881487. The cubic root of 687323066 is about 882.5113635593.

The spelling of 687323066 in words is "six hundred eighty-seven million, three hundred twenty-three thousand, sixty-six".