65455643 has 4 divisors (see below), whose sum is σ = 71406168. Its totient is φ = 59505120.

The previous prime is 65455619. The next prime is 65455667. The reversal of 65455643 is 34655456.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (65455619) and next prime (65455667).

It is a cyclic number.

It is not a de Polignac number, because 65455643 - 2¹⁶ = 65390107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65455597 and 65455606.

It is not an unprimeable number, because it can be changed into a prime (65455613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2975246 + ... + 2975267.

It is an arithmetic number, because the mean of its divisors is an integer number (17851542).

Almost surely, 2^65455643 is an apocalyptic number.

65455643 is a deficient number, since it is larger than the sum of its proper divisors (5950525).

65455643 is a wasteful number, since it uses less digits than its factorization.

65455643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5950524.

The product of its digits is 216000, while the sum is 38.

The square root of 65455643 is about 8090.4661793991. The cubic root of 65455643 is about 403.0098842673.

The spelling of 65455643 in words is "sixty-five million, four hundred fifty-five thousand, six hundred forty-three".