628861045 has 8 divisors (see below), whose sum is σ = 759153024. Its totient is φ = 500075664.

The previous prime is 628861043. The next prime is 628861049. The reversal of 628861045 is 540168826.

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 628861045 - 2¹ = 628861043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 628860989 and 628861007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628861043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375729 + ... + 377398.

It is an arithmetic number, because the mean of its divisors is an integer number (94894128).

Almost surely, 2^628861045 is an apocalyptic number.

It is an amenable number.

628861045 is a deficient number, since it is larger than the sum of its proper divisors (130291979).

628861045 is a wasteful number, since it uses less digits than its factorization.

628861045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753299.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 628861045 is about 25077.1020056146. The cubic root of 628861045 is about 856.7449719906.

The spelling of 628861045 in words is "six hundred twenty-eight million, eight hundred sixty-one thousand, forty-five".