1668735670674 has 8 divisors (see below), whose sum is σ = 3337471341360. Its totient is φ = 556245223556.

The previous prime is 1668735670663. The next prime is 1668735670709. The reversal of 1668735670674 is 4760765378661.

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

1668735670674 is an admirable number.

It is a super-2 number, since 2×1668735670674² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139061305884 + ... + 139061305895.

It is an arithmetic number, because the mean of its divisors is an integer number (417183917670).

Almost surely, 2^{1668735670674} is an apocalyptic number.

1668735670674 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1668735670674 is a wasteful number, since it uses less digits than its factorization.

1668735670674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278122611784.

The product of its (nonzero) digits is 213373440, while the sum is 66.

The spelling of 1668735670674 in words is "one trillion, six hundred sixty-eight billion, seven hundred thirty-five million, six hundred seventy thousand, six hundred seventy-four".