628719 has 32 divisors (see below), whose sum is σ = 1075200. Its totient is φ = 324576.

The previous prime is 628709. The next prime is 628721. The reversal of 628719 is 917826.

It is not a de Polignac number, because 628719 - 2⁵ = 628687 is a prime.

It is a super-2 number, since 2×628719² = 790575161922, which contains 22 as substring.

Its product of digits (6048) is a multiple of the sum of its prime factors (84).

It is a self number, because there is not a number n which added to its sum of digits gives 628719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628709) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13354 + ... + 13400.

It is an arithmetic number, because the mean of its divisors is an integer number (33600).

2⁶²⁸⁷¹⁹ is an apocalyptic number.

628719 is a deficient number, since it is larger than the sum of its proper divisors (446481).

628719 is a wasteful number, since it uses less digits than its factorization.

628719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 70 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 628719 is about 792.9180285502. The cubic root of 628719 is about 85.6680460917.

The spelling of 628719 in words is "six hundred twenty-eight thousand, seven hundred nineteen".