1666460063 has 4 divisors (see below), whose sum is σ = 1666791480. Its totient is φ = 1666128648.

The previous prime is 1666460027. The next prime is 1666460069. The reversal of 1666460063 is 3600646661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3600646661 = 19 ⋅189507719.

It is a cyclic number.

It is not a de Polignac number, because 1666460063 - 2²⁰ = 1665411487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1666459999 and 1666460026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666460069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158048 + ... + 168261.

It is an arithmetic number, because the mean of its divisors is an integer number (416697870).

Almost surely, 2^1666460063 is an apocalyptic number.

1666460063 is a deficient number, since it is larger than the sum of its proper divisors (331417).

1666460063 is an equidigital number, since it uses as much as digits as its factorization.

1666460063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331416.

The product of its (nonzero) digits is 93312, while the sum is 38.

The square root of 1666460063 is about 40822.2986001523. The cubic root of 1666460063 is about 1185.5821083256.

The spelling of 1666460063 in words is "one billion, six hundred sixty-six million, four hundred sixty thousand, sixty-three".