628587 has 16 divisors (see below), whose sum is σ = 962560. Its totient is φ = 405000.

The previous prime is 628583. The next prime is 628591. The reversal of 628587 is 785826.

It is an interprime number because it is at equal distance from previous prime (628583) and next prime (628591).

It is not a de Polignac number, because 628587 - 2² = 628583 is a prime.

It is a Duffinian number.

628587 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 628587.

It is not an unprimeable number, because it can be changed into a prime (628583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 462 + ... + 1212.

It is an arithmetic number, because the mean of its divisors is an integer number (60160).

2⁶²⁸⁵⁸⁷ is an apocalyptic number.

628587 is a deficient number, since it is larger than the sum of its proper divisors (333973).

628587 is a wasteful number, since it uses less digits than its factorization.

628587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791 (or 785 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 628587 is about 792.8347873296. The cubic root of 628587 is about 85.6620503164.

It can be divided in two parts, 62 and 8587, that added together give a square (8649 = 93²).

The spelling of 628587 in words is "six hundred twenty-eight thousand, five hundred eighty-seven".