65398477 has 2 divisors, whose sum is σ = 65398478. Its totient is φ = 65398476.

The previous prime is 65398471. The next prime is 65398481. The reversal of 65398477 is 77489356.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64304361 + 1094116 = 8019^2 + 1046^2 .

It is a cyclic number.

It is not a de Polignac number, because 65398477 - 2³ = 65398469 is a prime.

It is a super-3 number, since 3×65398477³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65398477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65398471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32699238 + 32699239.

It is an arithmetic number, because the mean of its divisors is an integer number (32699239).

Almost surely, 2^65398477 is an apocalyptic number.

It is an amenable number.

65398477 is a deficient number, since it is larger than the sum of its proper divisors (1).

65398477 is an equidigital number, since it uses as much as digits as its factorization.

65398477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 49.

The square root of 65398477 is about 8086.9324839521. The cubic root of 65398477 is about 402.8925265567.

The spelling of 65398477 in words is "sixty-five million, three hundred ninety-eight thousand, four hundred seventy-seven".