6669350587 has 4 divisors (see below), whose sum is σ = 6670230840. Its totient is φ = 6668470336.

The previous prime is 6669350581. The next prime is 6669350599. The reversal of 6669350587 is 7850539666.

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 6669350587 - 2³ = 6669350579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6669350581) 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, 428662 + ... + 443947.

It is an arithmetic number, because the mean of its divisors is an integer number (1667557710).

Almost surely, 2^6669350587 is an apocalyptic number.

6669350587 is a deficient number, since it is larger than the sum of its proper divisors (880253).

6669350587 is an equidigital number, since it uses as much as digits as its factorization.

6669350587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880252.

The product of its (nonzero) digits is 8164800, while the sum is 55.

The square root of 6669350587 is about 81666.0920272300. The cubic root of 6669350587 is about 1882.3245904494.

The spelling of 6669350587 in words is "six billion, six hundred sixty-nine million, three hundred fifty thousand, five hundred eighty-seven".