65303891 has 2 divisors, whose sum is σ = 65303892. Its totient is φ = 65303890.

The previous prime is 65303773. The next prime is 65303899. The reversal of 65303891 is 19830356.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65303891 is a prime.

It is not a weakly prime, because it can be changed into another prime (65303899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32651945 + 32651946.

It is an arithmetic number, because the mean of its divisors is an integer number (32651946).

Almost surely, 2^65303891 is an apocalyptic number.

65303891 is a deficient number, since it is larger than the sum of its proper divisors (1).

65303891 is an equidigital number, since it uses as much as digits as its factorization.

65303891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 65303891 is about 8081.0822913766. The cubic root of 65303891 is about 402.6981979783.

The spelling of 65303891 in words is "sixty-five million, three hundred three thousand, eight hundred ninety-one".