628266662827 has 4 divisors (see below), whose sum is σ = 637115489136. Its totient is φ = 619417836520.

The previous prime is 628266662791. The next prime is 628266662867. The reversal of 628266662827 is 728266662826.

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 628266662827 - 2¹⁵ = 628266630059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628266662867) 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, 4424413048 + ... + 4424413189.

It is an arithmetic number, because the mean of its divisors is an integer number (159278872284).

Almost surely, 2^628266662827 is an apocalyptic number.

628266662827 is a deficient number, since it is larger than the sum of its proper divisors (8848826309).

628266662827 is an equidigital number, since it uses as much as digits as its factorization.

628266662827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8848826308.

The product of its digits is 55738368, while the sum is 61.

Subtracting 628266662827 from its reverse (728266662826), we obtain a palindrome (99999999999).

The spelling of 628266662827 in words is "six hundred twenty-eight billion, two hundred sixty-six million, six hundred sixty-two thousand, eight hundred twenty-seven".