687084727133 has 16 divisors (see below), whose sum is σ = 796950720000. Its totient is φ = 580179704832.

The previous prime is 687084727103. The next prime is 687084727141. The reversal of 687084727133 is 331727480786.

It is not a de Polignac number, because 687084727133 - 2²² = 687080532829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687084727103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1135298 + ... + 1631891.

It is an arithmetic number, because the mean of its divisors is an integer number (49809420000).

Almost surely, 2^687084727133 is an apocalyptic number.

It is an amenable number.

687084727133 is a deficient number, since it is larger than the sum of its proper divisors (109865992867).

687084727133 is a wasteful number, since it uses less digits than its factorization.

687084727133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767724.

The product of its (nonzero) digits is 9483264, while the sum is 56.

The spelling of 687084727133 in words is "six hundred eighty-seven billion, eighty-four million, seven hundred twenty-seven thousand, one hundred thirty-three".