73665015 has 16 divisors (see below), whose sum is σ = 118250496. Its totient is φ = 39159200.

The previous prime is 73664999. The next prime is 73665019. The reversal of 73665015 is 51056637.

It is not a de Polignac number, because 73665015 - 2⁴ = 73664999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73665019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3231 + ... + 12560.

It is an arithmetic number, because the mean of its divisors is an integer number (7390656).

Almost surely, 2^73665015 is an apocalyptic number.

73665015 is a deficient number, since it is larger than the sum of its proper divisors (44585481).

73665015 is a wasteful number, since it uses less digits than its factorization.

73665015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16110.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 73665015 is about 8582.8325743894. The cubic root of 73665015 is about 419.1991826625.

The spelling of 73665015 in words is "seventy-three million, six hundred sixty-five thousand, fifteen".