632649197 has 2 divisors, whose sum is σ = 632649198. Its totient is φ = 632649196.

The previous prime is 632649179. The next prime is 632649217. The reversal of 632649197 is 791946236.

It is a happy number.

Together with previous prime (632649179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 422138116 + 210511081 = 20546^2 + 14509^2 .

It is a cyclic number.

It is not a de Polignac number, because 632649197 - 2⁶ = 632649133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (632643197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316324598 + 316324599.

It is an arithmetic number, because the mean of its divisors is an integer number (316324599).

Almost surely, 2^632649197 is an apocalyptic number.

It is an amenable number.

632649197 is a deficient number, since it is larger than the sum of its proper divisors (1).

632649197 is an equidigital number, since it uses as much as digits as its factorization.

632649197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 47.

The square root of 632649197 is about 25152.5187009174. The cubic root of 632649197 is about 858.4618245906.

The spelling of 632649197 in words is "six hundred thirty-two million, six hundred forty-nine thousand, one hundred ninety-seven".