1664801068 has 18 divisors (see below), whose sum is σ = 3389059716. Its totient is φ = 713486088.

The previous prime is 1664801063. The next prime is 1664801087. The reversal of 1664801068 is 8601084661.

It is a self number, because there is not a number n which added to its sum of digits gives 1664801068.

It is not an unprimeable number, because it can be changed into a prime (1664801063) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4246746 + ... + 4247137.

Almost surely, 2^1664801068 is an apocalyptic number.

It is an amenable number.

1664801068 is an abundant number, since it is smaller than the sum of its proper divisors (1724258648).

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

1664801068 is a wasteful number, since it uses less digits than its factorization.

1664801068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8493901 (or 8493892 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 1664801068 is about 40801.9738248041. The cubic root of 1664801068 is about 1185.1885539720.

The spelling of 1664801068 in words is "one billion, six hundred sixty-four million, eight hundred one thousand, sixty-eight".