63235891 has 2 divisors, whose sum is σ = 63235892. Its totient is φ = 63235890.

The previous prime is 63235859. The next prime is 63235919. The reversal of 63235891 is 19853236.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63235891 - 2⁵ = 63235859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63235891.

It is not a weakly prime, because it can be changed into another prime (63235811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31617945 + 31617946.

It is an arithmetic number, because the mean of its divisors is an integer number (31617946).

Almost surely, 2^63235891 is an apocalyptic number.

63235891 is a deficient number, since it is larger than the sum of its proper divisors (1).

63235891 is an equidigital number, since it uses as much as digits as its factorization.

63235891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 37.

The square root of 63235891 is about 7952.0997855912. The cubic root of 63235891 is about 398.4017285769.

The spelling of 63235891 in words is "sixty-three million, two hundred thirty-five thousand, eight hundred ninety-one".