3687971487 has 8 divisors (see below), whose sum is σ = 4924006704. Its totient is φ = 2455291968.

The previous prime is 3687971467. The next prime is 3687971519. The reversal of 3687971487 is 7841797863.

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

It is not a de Polignac number, because 3687971487 - 2⁶ = 3687971423 is a prime.

It is a super-2 number, since 2×3687971487² = 27202267377849982338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3687971487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3687971437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 836358 + ... + 840755.

It is an arithmetic number, because the mean of its divisors is an integer number (615500838).

Almost surely, 2^3687971487 is an apocalyptic number.

3687971487 is a deficient number, since it is larger than the sum of its proper divisors (1236035217).

3687971487 is a wasteful number, since it uses less digits than its factorization.

3687971487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677849.

The product of its digits is 14224896, while the sum is 60.

The square root of 3687971487 is about 60728.6710458907. The cubic root of 3687971487 is about 1545.0024943142.

The spelling of 3687971487 in words is "three billion, six hundred eighty-seven million, nine hundred seventy-one thousand, four hundred eighty-seven".