6670663642 has 16 divisors (see below), whose sum is σ = 10584072000. Its totient is φ = 3146612832.

The previous prime is 6670663589. The next prime is 6670663661. The reversal of 6670663642 is 2463660766.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 6670663592 and 6670663601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 989892 + ... + 996607.

It is an arithmetic number, because the mean of its divisors is an integer number (661504500).

Almost surely, 2^6670663642 is an apocalyptic number.

6670663642 is a deficient number, since it is larger than the sum of its proper divisors (3913408358).

6670663642 is a wasteful number, since it uses less digits than its factorization.

6670663642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986597.

The product of its (nonzero) digits is 1306368, while the sum is 46.

The square root of 6670663642 is about 81674.1308003948. The cubic root of 6670663642 is about 1882.4481123975.

The spelling of 6670663642 in words is "six billion, six hundred seventy million, six hundred sixty-three thousand, six hundred forty-two".