65603897 has 2 divisors, whose sum is σ = 65603898. Its totient is φ = 65603896.

The previous prime is 65603831. The next prime is 65603911. The reversal of 65603897 is 79830656.

65603897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58308496 + 7295401 = 7636^2 + 2701^2 .

It is a cyclic number.

It is not a de Polignac number, because 65603897 - 2²⁰ = 64555321 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65603807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32801948 + 32801949.

It is an arithmetic number, because the mean of its divisors is an integer number (32801949).

Almost surely, 2^65603897 is an apocalyptic number.

It is an amenable number.

65603897 is a deficient number, since it is larger than the sum of its proper divisors (1).

65603897 is an equidigital number, since it uses as much as digits as its factorization.

65603897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 65603897 is about 8099.6232628438. The cubic root of 65603897 is about 403.3139210808.

The spelling of 65603897 in words is "sixty-five million, six hundred three thousand, eight hundred ninety-seven".