628266662826 has 64 divisors (see below), whose sum is σ = 1431577276416. Its totient is φ = 181951563200.

The previous prime is 628266662791. The next prime is 628266662867.

628266662826 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×628266662826³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 628266662826.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1617535 + ... + 1967981.

It is an arithmetic number, because the mean of its divisors is an integer number (22368394944).

Almost surely, 2^628266662826 is an apocalyptic number.

628266662826 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 628266662826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (715788638208).

628266662826 is an abundant number, since it is smaller than the sum of its proper divisors (803310613590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628266662826 is a wasteful number, since it uses less digits than its factorization.

628266662826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351667.

The product of its digits is 47775744, while the sum is 60.

The spelling of 628266662826 in words is "six hundred twenty-eight billion, two hundred sixty-six million, six hundred sixty-two thousand, eight hundred twenty-six".