635828023669 has 2 divisors, whose sum is σ = 635828023670. Its totient is φ = 635828023668.

The previous prime is 635828023651. The next prime is 635828023729. The reversal of 635828023669 is 966320828536.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 409382428900 + 226445594769 = 639830^2 + 475863^2 .

It is a cyclic number.

It is not a de Polignac number, because 635828023669 - 2⁷ = 635828023541 is a prime.

It is a super-2 number, since 2×635828023669² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (635828023609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317914011834 + 317914011835.

It is an arithmetic number, because the mean of its divisors is an integer number (317914011835).

Almost surely, 2^635828023669 is an apocalyptic number.

It is an amenable number.

635828023669 is a deficient number, since it is larger than the sum of its proper divisors (1).

635828023669 is an equidigital number, since it uses as much as digits as its factorization.

635828023669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22394880, while the sum is 58.

The spelling of 635828023669 in words is "six hundred thirty-five billion, eight hundred twenty-eight million, twenty-three thousand, six hundred sixty-nine".