664022403 has 24 divisors (see below), whose sum is σ = 1064082240. Its totient is φ = 395613360.

The previous prime is 664022353. The next prime is 664022467. The reversal of 664022403 is 304220466.

It is not a de Polignac number, because 664022403 - 2⁶ = 664022339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (664021403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51001 + ... + 62682.

It is an arithmetic number, because the mean of its divisors is an integer number (44336760).

Almost surely, 2^664022403 is an apocalyptic number.

664022403 is a deficient number, since it is larger than the sum of its proper divisors (400059837).

664022403 is a wasteful number, since it uses less digits than its factorization.

664022403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113759 (or 113756 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 664022403 is about 25768.6321522893. The cubic root of 664022403 is about 872.4239457739.

Adding to 664022403 its reverse (304220466), we get a palindrome (968242869).

The spelling of 664022403 in words is "six hundred sixty-four million, twenty-two thousand, four hundred three".