664827183829 has 2 divisors, whose sum is σ = 664827183830. Its totient is φ = 664827183828.

The previous prime is 664827183743. The next prime is 664827183931. The reversal of 664827183829 is 928381728466.

664827183829 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 can be written as a sum of positive squares in only one way, i.e., 630388360900 + 34438822929 = 793970^2 + 185577^2 .

It is a cyclic number.

It is not a de Polignac number, because 664827183829 - 2⁷ = 664827183701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664827183029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332413591914 + 332413591915.

It is an arithmetic number, because the mean of its divisors is an integer number (332413591915).

Almost surely, 2^664827183829 is an apocalyptic number.

It is an amenable number.

664827183829 is a deficient number, since it is larger than the sum of its proper divisors (1).

664827183829 is an equidigital number, since it uses as much as digits as its factorization.

664827183829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55738368, while the sum is 64.

The spelling of 664827183829 in words is "six hundred sixty-four billion, eight hundred twenty-seven million, one hundred eighty-three thousand, eight hundred twenty-nine".