7964638487 has 8 divisors (see below), whose sum is σ = 8579982096. Its totient is φ = 7349677632.

The previous prime is 7964638459. The next prime is 7964638523. The reversal of 7964638487 is 7848364697.

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

It is a cyclic number.

It is not a de Polignac number, because 7964638487 - 2¹⁰ = 7964637463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7964638687) 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, 51713 + ... + 136394.

It is an arithmetic number, because the mean of its divisors is an integer number (1072497762).

Almost surely, 2^7964638487 is an apocalyptic number.

7964638487 is a deficient number, since it is larger than the sum of its proper divisors (615343609).

7964638487 is a wasteful number, since it uses less digits than its factorization.

7964638487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191377.

The product of its digits is 48771072, while the sum is 62.

The square root of 7964638487 is about 89244.8233064529. The cubic root of 7964638487 is about 1997.0488547628.

The spelling of 7964638487 in words is "seven billion, nine hundred sixty-four million, six hundred thirty-eight thousand, four hundred eighty-seven".