646027003623 has 4 divisors (see below), whose sum is σ = 861369338168. Its totient is φ = 430684669080.

The previous prime is 646027003549. The next prime is 646027003663. The reversal of 646027003623 is 326300720646.

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

It is not a de Polignac number, because 646027003623 - 2⁸ = 646027003367 is a prime.

It is a super-2 number, since 2×646027003623² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646027003663) 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, 107671167268 + ... + 107671167273.

It is an arithmetic number, because the mean of its divisors is an integer number (215342334542).

Almost surely, 2^646027003623 is an apocalyptic number.

646027003623 is a deficient number, since it is larger than the sum of its proper divisors (215342334545).

646027003623 is a wasteful number, since it uses less digits than its factorization.

646027003623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215342334544.

The product of its (nonzero) digits is 217728, while the sum is 39.

The spelling of 646027003623 in words is "six hundred forty-six billion, twenty-seven million, three thousand, six hundred twenty-three".