396738636677 has 2 divisors, whose sum is σ = 396738636678. Its totient is φ = 396738636676.

The previous prime is 396738636659. The next prime is 396738636719. The reversal of 396738636677 is 776636837693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 394523428321 + 2215208356 = 628111^2 + 47066^2 .

It is a cyclic number.

It is not a de Polignac number, because 396738636677 - 2⁸ = 396738636421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 396738636677.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396738636277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198369318338 + 198369318339.

It is an arithmetic number, because the mean of its divisors is an integer number (198369318339).

Almost surely, 2^396738636677 is an apocalyptic number.

It is an amenable number.

396738636677 is a deficient number, since it is larger than the sum of its proper divisors (1).

396738636677 is an equidigital number, since it uses as much as digits as its factorization.

396738636677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864162432, while the sum is 71.

The spelling of 396738636677 in words is "three hundred ninety-six billion, seven hundred thirty-eight million, six hundred thirty-six thousand, six hundred seventy-seven".