4487131687 has 4 divisors (see below), whose sum is σ = 4502987560. Its totient is φ = 4471275816.

The previous prime is 4487131681. The next prime is 4487131699. The reversal of 4487131687 is 7861317844.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4487131687 - 2¹⁹ = 4486607399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4487131687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4487131681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7927512 + ... + 7928077.

It is an arithmetic number, because the mean of its divisors is an integer number (1125746890).

Almost surely, 2^4487131687 is an apocalyptic number.

4487131687 is a deficient number, since it is larger than the sum of its proper divisors (15855873).

4487131687 is a wasteful number, since it uses less digits than its factorization.

4487131687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15855872.

The product of its digits is 903168, while the sum is 49.

The square root of 4487131687 is about 66986.0559146454. The cubic root of 4487131687 is about 1649.3884096378.

The spelling of 4487131687 in words is "four billion, four hundred eighty-seven million, one hundred thirty-one thousand, six hundred eighty-seven".