65318401 has 2 divisors, whose sum is σ = 65318402. Its totient is φ = 65318400.

The previous prime is 65318387. The next prime is 65318423. The reversal of 65318401 is 10481356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64320400 + 998001 = 8020^2 + 999^2 .

It is a cyclic number.

It is not a de Polignac number, because 65318401 - 2⁷ = 65318273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65318401.

It is not a weakly prime, because it can be changed into another prime (65318441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32659200 + 32659201.

It is an arithmetic number, because the mean of its divisors is an integer number (32659201).

Almost surely, 2^65318401 is an apocalyptic number.

It is an amenable number.

65318401 is a deficient number, since it is larger than the sum of its proper divisors (1).

65318401 is an equidigital number, since it uses as much as digits as its factorization.

65318401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 65318401 is about 8081.9800172977. The cubic root of 65318401 is about 402.7280212045.

Adding to 65318401 its reverse (10481356), we get a palindrome (75799757).

The spelling of 65318401 in words is "sixty-five million, three hundred eighteen thousand, four hundred one".