1664466000 has 80 divisors (see below), whose sum is σ = 5366257728. Its totient is φ = 443856000.

The previous prime is 1664465983. The next prime is 1664466071. The reversal of 1664466000 is 6644661.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132706 + ... + 144705.

Almost surely, 2^1664466000 is an apocalyptic number.

1664466000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1664466000 is an abundant number, since it is smaller than the sum of its proper divisors (3701791728).

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

1664466000 is a wasteful number, since it uses less digits than its factorization.

1664466000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277437 (or 277421 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 1664466000 is about 40797.8675913337. The cubic root of 1664466000 is about 1185.1090358819.

The spelling of 1664466000 in words is "one billion, six hundred sixty-four million, four hundred sixty-six thousand".