65463643 has 16 divisors (see below), whose sum is σ = 77688000. Its totient is φ = 53972352.

The previous prime is 65463641. The next prime is 65463649. The reversal of 65463643 is 34636456.

It is not a de Polignac number, because 65463643 - 2¹ = 65463641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65463641) 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 15 ways as a sum of consecutive naturals, for example, 78553 + ... + 79381.

It is an arithmetic number, because the mean of its divisors is an integer number (4855500).

Almost surely, 2^65463643 is an apocalyptic number.

65463643 is a deficient number, since it is larger than the sum of its proper divisors (12224357).

65463643 is a wasteful number, since it uses less digits than its factorization.

65463643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254.

The product of its digits is 155520, while the sum is 37.

The square root of 65463643 is about 8090.9605733806. The cubic root of 65463643 is about 403.0263022443.

The spelling of 65463643 in words is "sixty-five million, four hundred sixty-three thousand, six hundred forty-three".