628755 has 16 divisors (see below), whose sum is σ = 1016064. Its totient is φ = 332000.

The previous prime is 628753. The next prime is 628757. The reversal of 628755 is 557826.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (628753) and next prime (628757).

It is not a de Polignac number, because 628755 - 2¹ = 628753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628753) 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, 2380 + ... + 2630.

It is an arithmetic number, because the mean of its divisors is an integer number (63504).

2⁶²⁸⁷⁵⁵ is an apocalyptic number.

628755 is a deficient number, since it is larger than the sum of its proper divisors (387309).

628755 is a wasteful number, since it uses less digits than its factorization.

628755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426.

The product of its digits is 16800, while the sum is 33.

The square root of 628755 is about 792.9407291847. The cubic root of 628755 is about 85.6696811575.

The spelling of 628755 in words is "six hundred twenty-eight thousand, seven hundred fifty-five".