65436481 has 8 divisors (see below), whose sum is σ = 71476704. Its totient is φ = 59411520.

The previous prime is 65436439. The next prime is 65436563. The reversal of 65436481 is 18463456.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 65436481 - 2¹³ = 65428289 is a prime.

It is a super-2 number, since 2×65436481² = 8563866091326722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65436481.

It is not an unprimeable number, because it can be changed into a prime (65436401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6345 + ... + 13081.

It is an arithmetic number, because the mean of its divisors is an integer number (8934588).

Almost surely, 2^65436481 is an apocalyptic number.

It is an amenable number.

65436481 is a deficient number, since it is larger than the sum of its proper divisors (6040223).

65436481 is a wasteful number, since it uses less digits than its factorization.

65436481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7631.

The product of its digits is 69120, while the sum is 37.

The square root of 65436481 is about 8089.2818593494. The cubic root of 65436481 is about 402.9705536674.

The spelling of 65436481 in words is "sixty-five million, four hundred thirty-six thousand, four hundred eighty-one".