687009900786 has 16 divisors (see below), whose sum is σ = 1498930692768. Its totient is φ = 208184818400.

The previous prime is 687009900701. The next prime is 687009900817.

687009900786 is nontrivially palindromic in base 10.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5204620395 + ... + 5204620526.

It is an arithmetic number, because the mean of its divisors is an integer number (93683168298).

Almost surely, 2^687009900786 is an apocalyptic number.

687009900786 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

687009900786 is an abundant number, since it is smaller than the sum of its proper divisors (811920791982).

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

687009900786 is a wasteful number, since it uses less digits than its factorization.

687009900786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10409240937.

The product of its (nonzero) digits is 9144576, while the sum is 60.

The spelling of 687009900786 in words is "six hundred eighty-seven billion, nine million, nine hundred thousand, seven hundred eighty-six".