1663460664 has 16 divisors (see below), whose sum is σ = 4158651720. Its totient is φ = 554486880.

The previous prime is 1663460653. The next prime is 1663460741. The reversal of 1663460664 is 4660643661.

It is a congruent number.

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, 34655407 + ... + 34655454.

Almost surely, 2^1663460664 is an apocalyptic number.

It is an amenable number.

1663460664 is an abundant number, since it is smaller than the sum of its proper divisors (2495191056).

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

1663460664 is a wasteful number, since it uses less digits than its factorization.

1663460664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69310870 (or 69310866 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 42.

The square root of 1663460664 is about 40785.5447922423. The cubic root of 1663460664 is about 1184.8703862223.

The spelling of 1663460664 in words is "one billion, six hundred sixty-three million, four hundred sixty thousand, six hundred sixty-four".