636983 has 2 divisors, whose sum is σ = 636984. Its totient is φ = 636982.

The previous prime is 636967. The next prime is 636997. The reversal of 636983 is 389636.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 636983 - 2⁴ = 636967 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (636953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318491 + 318492.

It is an arithmetic number, because the mean of its divisors is an integer number (318492).

2⁶³⁶⁹⁸³ is an apocalyptic number.

636983 is a deficient number, since it is larger than the sum of its proper divisors (1).

636983 is an equidigital number, since it uses as much as digits as its factorization.

636983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 35.

The square root of 636983 is about 798.1121475081. The cubic root of 636983 is about 86.0417590599.

The spelling of 636983 in words is "six hundred thirty-six thousand, nine hundred eighty-three".