73423665 has 96 divisors (see below), whose sum is σ = 154103040. Its totient is φ = 32845824.

The previous prime is 73423639. The next prime is 73423703. The reversal of 73423665 is 56632437.

It is not a de Polignac number, because 73423665 - 2⁸ = 73423409 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 756897 + ... + 756993.

It is an arithmetic number, because the mean of its divisors is an integer number (1605240).

Almost surely, 2^73423665 is an apocalyptic number.

It is an amenable number.

73423665 is an abundant number, since it is smaller than the sum of its proper divisors (80679375).

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

73423665 is an equidigital number, since it uses as much as digits as its factorization.

73423665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 201 counting only the distinct ones).

The product of its digits is 90720, while the sum is 36.

The square root of 73423665 is about 8568.7609956166. The cubic root of 73423665 is about 418.7408718586.

It can be divided in two parts, 73423 and 665, that added together give a cube (74088 = 42³).

The spelling of 73423665 in words is "seventy-three million, four hundred twenty-three thousand, six hundred sixty-five".