65869481 has 2 divisors, whose sum is σ = 65869482. Its totient is φ = 65869480.

The previous prime is 65869477. The next prime is 65869487. The reversal of 65869481 is 18496856.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65869456 + 25 = 8116^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 65869481 - 2² = 65869477 is a prime.

It is a super-2 number, since 2×65869481² = 8677577054418722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65869487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32934740 + 32934741.

It is an arithmetic number, because the mean of its divisors is an integer number (32934741).

Almost surely, 2^65869481 is an apocalyptic number.

It is an amenable number.

65869481 is a deficient number, since it is larger than the sum of its proper divisors (1).

65869481 is an equidigital number, since it uses as much as digits as its factorization.

65869481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 47.

The square root of 65869481 is about 8116.0015401674. The cubic root of 65869481 is about 403.8574330306.

The spelling of 65869481 in words is "sixty-five million, eight hundred sixty-nine thousand, four hundred eighty-one".