73645117 has 16 divisors (see below), whose sum is σ = 92132992. Its totient is φ = 57309120.

The previous prime is 73645069. The next prime is 73645129. The reversal of 73645117 is 71154637.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73645117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73648117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1083 + ... + 12184.

It is an arithmetic number, because the mean of its divisors is an integer number (5758312).

Almost surely, 2^73645117 is an apocalyptic number.

It is an amenable number.

73645117 is a deficient number, since it is larger than the sum of its proper divisors (18487875).

73645117 is a wasteful number, since it uses less digits than its factorization.

73645117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13348.

The product of its digits is 17640, while the sum is 34.

The square root of 73645117 is about 8581.6733216780. The cubic root of 73645117 is about 419.1614353162.

The spelling of 73645117 in words is "seventy-three million, six hundred forty-five thousand, one hundred seventeen".