7867490947687 has 4 divisors (see below), whose sum is σ = 8991418225936. Its totient is φ = 6743563669440.

The previous prime is 7867490947663. The next prime is 7867490947769.

7867490947687 is nontrivially palindromic in base 10.

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 7867490947687 - 2¹⁹ = 7867490423399 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 7867490947687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7867490947087) 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, 561963639114 + ... + 561963639127.

It is an arithmetic number, because the mean of its divisors is an integer number (2247854556484).

Almost surely, 2^{7867490947687} is an apocalyptic number.

7867490947687 is a deficient number, since it is larger than the sum of its proper divisors (1123927278249).

7867490947687 is a wasteful number, since it uses less digits than its factorization.

7867490947687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123927278248.

The product of its (nonzero) digits is 7169347584, while the sum is 82.

The spelling of 7867490947687 in words is "seven trillion, eight hundred sixty-seven billion, four hundred ninety million, nine hundred forty-seven thousand, six hundred eighty-seven".