7666971487 has 8 divisors (see below), whose sum is σ = 8763955200. Its totient is φ = 6570413304.

The previous prime is 7666971479. The next prime is 7666971527. The reversal of 7666971487 is 7841796667.

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

It is not a de Polignac number, because 7666971487 - 2³ = 7666971479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7666971427) 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, 66787 + ... + 140692.

It is an arithmetic number, because the mean of its divisors is an integer number (1095494400).

Almost surely, 2^7666971487 is an apocalyptic number.

7666971487 is a deficient number, since it is larger than the sum of its proper divisors (1096983713).

7666971487 is a wasteful number, since it uses less digits than its factorization.

7666971487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212765.

The product of its digits is 21337344, while the sum is 61.

The square root of 7666971487 is about 87561.2442065552. The cubic root of 7666971487 is about 1971.8533656279.

The spelling of 7666971487 in words is "seven billion, six hundred sixty-six million, nine hundred seventy-one thousand, four hundred eighty-seven".