65473999 has 4 divisors (see below), whose sum is σ = 66396240. Its totient is φ = 64551760.

The previous prime is 65473997. The next prime is 65474009. The reversal of 65473999 is 99937456.

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

It is a cyclic number.

It is not a de Polignac number, because 65473999 - 2¹ = 65473997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65473997) 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 3 ways as a sum of consecutive naturals, for example, 461014 + ... + 461155.

It is an arithmetic number, because the mean of its divisors is an integer number (16599060).

Almost surely, 2^65473999 is an apocalyptic number.

65473999 is a deficient number, since it is larger than the sum of its proper divisors (922241).

65473999 is an equidigital number, since it uses as much as digits as its factorization.

65473999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922240.

The product of its digits is 1837080, while the sum is 52.

The square root of 65473999 is about 8091.6005215285. The cubic root of 65473999 is about 403.0475533293.

The spelling of 65473999 in words is "sixty-five million, four hundred seventy-three thousand, nine hundred ninety-nine".