628247587 has 8 divisors (see below), whose sum is σ = 701300160. Its totient is φ = 557851560.

The previous prime is 628247567. The next prime is 628247629. The reversal of 628247587 is 785742826.

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 628247587 - 2¹¹ = 628245539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 628247587.

It is not an unprimeable number, because it can be changed into a prime (628247567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663637 + ... + 664582.

It is an arithmetic number, because the mean of its divisors is an integer number (87662520).

Almost surely, 2^628247587 is an apocalyptic number.

628247587 is a deficient number, since it is larger than the sum of its proper divisors (73052573).

628247587 is a wasteful number, since it uses less digits than its factorization.

628247587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328273.

The product of its digits is 1505280, while the sum is 49.

The square root of 628247587 is about 25064.8675839311. The cubic root of 628247587 is about 856.4662946076.

The spelling of 628247587 in words is "six hundred twenty-eight million, two hundred forty-seven thousand, five hundred eighty-seven".