6640214487 has 8 divisors (see below), whose sum is σ = 9319599360. Its totient is φ = 4193819640.

The previous prime is 6640214461. The next prime is 6640214507. The reversal of 6640214487 is 7844120466.

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

It is not a de Polignac number, because 6640214487 - 2⁶ = 6640214423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6640214417) 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, 58247439 + ... + 58247552.

It is an arithmetic number, because the mean of its divisors is an integer number (1164949920).

Almost surely, 2^6640214487 is an apocalyptic number.

6640214487 is a deficient number, since it is larger than the sum of its proper divisors (2679384873).

6640214487 is a wasteful number, since it uses less digits than its factorization.

6640214487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116495013.

The product of its (nonzero) digits is 258048, while the sum is 42.

The square root of 6640214487 is about 81487.5112333172. The cubic root of 6640214487 is about 1879.5795127762.

The spelling of 6640214487 in words is "six billion, six hundred forty million, two hundred fourteen thousand, four hundred eighty-seven".