3691761687 has 12 divisors (see below), whose sum is σ = 5446003680. Its totient is φ = 2408808768.

The previous prime is 3691761677. The next prime is 3691761713. The reversal of 3691761687 is 7861671963.

It is a happy number.

3691761687 is a `hidden beast` number, since 3 + 6 + 9 + 17 + 616 + 8 + 7 = 666.

It is not a de Polignac number, because 3691761687 - 2¹¹ = 3691759639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3691761607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4363362 + ... + 4364207.

It is an arithmetic number, because the mean of its divisors is an integer number (453833640).

Almost surely, 2^3691761687 is an apocalyptic number.

3691761687 is a deficient number, since it is larger than the sum of its proper divisors (1754241993).

3691761687 is a wasteful number, since it uses less digits than its factorization.

3691761687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8727622 (or 8727619 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 3691761687 is about 60759.8690502210. The cubic root of 3691761687 is about 1545.5315894691.

The spelling of 3691761687 in words is "three billion, six hundred ninety-one million, seven hundred sixty-one thousand, six hundred eighty-seven".