687882066 has 32 divisors (see below), whose sum is σ = 1400390208. Its totient is φ = 225216000.

The previous prime is 687882053. The next prime is 687882073. The reversal of 687882066 is 660288786.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106810 + ... + 113066.

It is an arithmetic number, because the mean of its divisors is an integer number (43762194).

Almost surely, 2^687882066 is an apocalyptic number.

687882066 is an abundant number, since it is smaller than the sum of its proper divisors (712508142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

687882066 is a wasteful number, since it uses less digits than its factorization.

687882066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6586.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The square root of 687882066 is about 26227.5059050608. The cubic root of 687882066 is about 882.7505476233.

The spelling of 687882066 in words is "six hundred eighty-seven million, eight hundred eighty-two thousand, sixty-six".