73996665 has 16 divisors (see below), whose sum is σ = 125359488. Its totient is φ = 37143296.

The previous prime is 73996627. The next prime is 73996667. The reversal of 73996665 is 56669937.

It is a cyclic number.

It is not a de Polignac number, because 73996665 - 2¹⁶ = 73931129 is a prime.

It is a super-2 number, since 2×73996665² = 10951012862244450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (73996667) 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, 144837 + ... + 145346.

It is an arithmetic number, because the mean of its divisors is an integer number (7834968).

Almost surely, 2^73996665 is an apocalyptic number.

It is an amenable number.

73996665 is a deficient number, since it is larger than the sum of its proper divisors (51362823).

73996665 is a wasteful number, since it uses less digits than its factorization.

73996665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290208.

The product of its digits is 1837080, while the sum is 51.

The square root of 73996665 is about 8602.1314219210. The cubic root of 73996665 is about 419.8273383257.

The spelling of 73996665 in words is "seventy-three million, nine hundred ninety-six thousand, six hundred sixty-five".