73045665 has 64 divisors (see below), whose sum is σ = 161925120. Its totient is φ = 30352320.

The previous prime is 73045639. The next prime is 73045667. The reversal of 73045665 is 56654037.

It is not a de Polignac number, because 73045665 - 2⁸ = 73045409 is a prime.

It is a super-3 number, since 3×73045665³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (73045667) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6882 + ... + 13908.

It is an arithmetic number, because the mean of its divisors is an integer number (2530080).

Almost surely, 2^73045665 is an apocalyptic number.

It is an amenable number.

73045665 is an abundant number, since it is smaller than the sum of its proper divisors (88879455).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73045665 is a wasteful number, since it uses less digits than its factorization.

73045665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7059 (or 7053 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The square root of 73045665 is about 8546.6756695220. The cubic root of 73045665 is about 418.0210473747.

The spelling of 73045665 in words is "seventy-three million, forty-five thousand, six hundred sixty-five".