1663066433 has 8 divisors (see below), whose sum is σ = 1901151552. Its totient is φ = 1425107376.

The previous prime is 1663066421. The next prime is 1663066459. The reversal of 1663066433 is 3346603661.

It is a happy number.

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

It is not a de Polignac number, because 1663066433 - 2⁶ = 1663066369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1663066403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1310 + ... + 57687.

It is an arithmetic number, because the mean of its divisors is an integer number (237643944).

Almost surely, 2^1663066433 is an apocalyptic number.

It is an amenable number.

1663066433 is a deficient number, since it is larger than the sum of its proper divisors (238085119).

1663066433 is an equidigital number, since it uses as much as digits as its factorization.

1663066433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63031.

The product of its (nonzero) digits is 139968, while the sum is 38.

The square root of 1663066433 is about 40780.7115313110. The cubic root of 1663066433 is about 1184.7767762454.

The spelling of 1663066433 in words is "one billion, six hundred sixty-three million, sixty-six thousand, four hundred thirty-three".