628260687 has 12 divisors (see below), whose sum is σ = 960869520. Its totient is φ = 394202688.

The previous prime is 628260667. The next prime is 628260691. The reversal of 628260687 is 786062826.

It is a happy number.

It is not a de Polignac number, because 628260687 - 2⁶ = 628260623 is a prime.

It is a super-2 number, since 2×628260687² = 789422981659423938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628260667) 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 11 ways as a sum of consecutive naturals, for example, 2052987 + ... + 2053292.

It is an arithmetic number, because the mean of its divisors is an integer number (80072460).

Almost surely, 2^628260687 is an apocalyptic number.

628260687 is a deficient number, since it is larger than the sum of its proper divisors (332608833).

628260687 is a wasteful number, since it uses less digits than its factorization.

628260687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4106302 (or 4106299 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 628260687 is about 25065.1289045159. The cubic root of 628260687 is about 856.4722474785.

The spelling of 628260687 in words is "six hundred twenty-eight million, two hundred sixty thousand, six hundred eighty-seven".