632440811 has 2 divisors, whose sum is σ = 632440812. Its totient is φ = 632440810.

The previous prime is 632440777. The next prime is 632440813. The reversal of 632440811 is 118044236.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 632440811 - 2⁶ = 632440747 is a prime.

Together with 632440813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (632440813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316220405 + 316220406.

It is an arithmetic number, because the mean of its divisors is an integer number (316220406).

Almost surely, 2^632440811 is an apocalyptic number.

632440811 is a deficient number, since it is larger than the sum of its proper divisors (1).

632440811 is an equidigital number, since it uses as much as digits as its factorization.

632440811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 632440811 is about 25148.3759117761. The cubic root of 632440811 is about 858.3675590420.

The spelling of 632440811 in words is "six hundred thirty-two million, four hundred forty thousand, eight hundred eleven".