6650164403 has 4 divisors (see below), whose sum is σ = 6657042480. Its totient is φ = 6643286328.

The previous prime is 6650164387. The next prime is 6650164421. The reversal of 6650164403 is 3044610566.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6650164403 - 2⁴ = 6650164387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6650164903) 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, 3437588 + ... + 3439521.

It is an arithmetic number, because the mean of its divisors is an integer number (1664260620).

Almost surely, 2^6650164403 is an apocalyptic number.

6650164403 is a deficient number, since it is larger than the sum of its proper divisors (6878077).

6650164403 is an equidigital number, since it uses as much as digits as its factorization.

6650164403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6878076.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 6650164403 is about 81548.5401647387. The cubic root of 6650164403 is about 1880.5178521934.

Adding to 6650164403 its reverse (3044610566), we get a palindrome (9694774969).

The spelling of 6650164403 in words is "six billion, six hundred fifty million, one hundred sixty-four thousand, four hundred three".