65685901 has 2 divisors, whose sum is σ = 65685902. Its totient is φ = 65685900.

The previous prime is 65685857. The next prime is 65685913. The reversal of 65685901 is 10958656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65124900 + 561001 = 8070^2 + 749^2 .

It is a cyclic number.

It is not a de Polignac number, because 65685901 - 2¹¹ = 65683853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65685601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32842950 + 32842951.

It is an arithmetic number, because the mean of its divisors is an integer number (32842951).

Almost surely, 2^65685901 is an apocalyptic number.

It is an amenable number.

65685901 is a deficient number, since it is larger than the sum of its proper divisors (1).

65685901 is an equidigital number, since it uses as much as digits as its factorization.

65685901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 65685901 is about 8104.6838926636. The cubic root of 65685901 is about 403.4818967928.

The spelling of 65685901 in words is "sixty-five million, six hundred eighty-five thousand, nine hundred one".