73666005 has 16 divisors (see below), whose sum is σ = 134703744. Its totient is φ = 33675840.

The previous prime is 73665997. The next prime is 73666007. The reversal of 73666005 is 50066637.

It is not a de Polignac number, because 73666005 - 2³ = 73665997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73666007) 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, 350686 + ... + 350895.

It is an arithmetic number, because the mean of its divisors is an integer number (8418984).

Almost surely, 2^73666005 is an apocalyptic number.

It is an amenable number.

73666005 is a deficient number, since it is larger than the sum of its proper divisors (61037739).

73666005 is a wasteful number, since it uses less digits than its factorization.

73666005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701596.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 73666005 is about 8582.8902474633. The cubic root of 73666005 is about 419.2010605567.

The spelling of 73666005 in words is "seventy-three million, six hundred sixty-six thousand, five".