65388481 has 8 divisors (see below), whose sum is σ = 70509600. Its totient is φ = 60435360.

The previous prime is 65388469. The next prime is 65388487. The reversal of 65388481 is 18488356.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65388481 is a prime.

It is a super-2 number, since 2×65388481² = 8551306894974722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65388487) 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 in 7 ways as a sum of consecutive naturals, for example, 41191 + ... + 42748.

It is an arithmetic number, because the mean of its divisors is an integer number (8813700).

Almost surely, 2^65388481 is an apocalyptic number.

It is an amenable number.

65388481 is a deficient number, since it is larger than the sum of its proper divisors (5121119).

65388481 is a wasteful number, since it uses less digits than its factorization.

65388481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83999.

The product of its digits is 184320, while the sum is 43.

The square root of 65388481 is about 8086.3144262389. The cubic root of 65388481 is about 402.8719984594.

The spelling of 65388481 in words is "sixty-five million, three hundred eighty-eight thousand, four hundred eighty-one".