646620022003 has 8 divisors (see below), whose sum is σ = 680669291520. Its totient is φ = 612572416200.

The previous prime is 646620022001. The next prime is 646620022057. The reversal of 646620022003 is 300220026646.

646620022003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 646620022003 - 2¹ = 646620022001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646620022001) 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, 425526 + ... + 1214212.

It is an arithmetic number, because the mean of its divisors is an integer number (85083661440).

Almost surely, 2^646620022003 is an apocalyptic number.

646620022003 is a deficient number, since it is larger than the sum of its proper divisors (34049269517).

646620022003 is a wasteful number, since it uses less digits than its factorization.

646620022003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831857.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 646620022003 its reverse (300220026646), we get a palindrome (946840048649).

The spelling of 646620022003 in words is "six hundred forty-six billion, six hundred twenty million, twenty-two thousand, three".