628983 has 12 divisors (see below), whose sum is σ = 962208. Its totient is φ = 394560.

The previous prime is 628973. The next prime is 628993. The reversal of 628983 is 389826.

It is an interprime number because it is at equal distance from previous prime (628973) and next prime (628993).

It is not a de Polignac number, because 628983 - 2¹⁶ = 563447 is a prime.

It is a super-2 number, since 2×628983² = 791239228578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1903 + ... + 2208.

It is an arithmetic number, because the mean of its divisors is an integer number (80184).

2⁶²⁸⁹⁸³ is an apocalyptic number.

628983 is a deficient number, since it is larger than the sum of its proper divisors (333225).

628983 is a wasteful number, since it uses less digits than its factorization.

628983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4134 (or 4131 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 628983 is about 793.0844847808. The cubic root of 628983 is about 85.6800351251.

It can be divided in two parts, 62 and 8983, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 628983 in words is "six hundred twenty-eight thousand, nine hundred eighty-three".