628982751 has 4 divisors (see below), whose sum is σ = 838643672. Its totient is φ = 419321832.

The previous prime is 628982741. The next prime is 628982791. The reversal of 628982751 is 157289826.

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

It is not a de Polignac number, because 628982751 - 2⁶ = 628982687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 628982751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628982741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104830456 + ... + 104830461.

It is an arithmetic number, because the mean of its divisors is an integer number (209660918).

Almost surely, 2^628982751 is an apocalyptic number.

628982751 is a deficient number, since it is larger than the sum of its proper divisors (209660921).

628982751 is a wasteful number, since it uses less digits than its factorization.

628982751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209660920.

The product of its digits is 483840, while the sum is 48.

The square root of 628982751 is about 25079.5285242765. The cubic root of 628982751 is about 856.8002381889.

The spelling of 628982751 in words is "six hundred twenty-eight million, nine hundred eighty-two thousand, seven hundred fifty-one".