628783 has 2 divisors, whose sum is σ = 628784. Its totient is φ = 628782.

The previous prime is 628781. The next prime is 628787. The reversal of 628783 is 387826.

It is a happy number.

628783 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 628783 - 2¹ = 628781 is a prime.

It is a super-2 number, since 2×628783² = 790736122178, which contains 22 as substring.

Together with 628781, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314391 + 314392.

It is an arithmetic number, because the mean of its divisors is an integer number (314392).

2⁶²⁸⁷⁸³ is an apocalyptic number.

628783 is a deficient number, since it is larger than the sum of its proper divisors (1).

628783 is an equidigital number, since it uses as much as digits as its factorization.

628783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 34.

The square root of 628783 is about 792.9583847845. The cubic root of 628783 is about 85.6709528322.

The spelling of 628783 in words is "six hundred twenty-eight thousand, seven hundred eighty-three".