73636666 has 8 divisors (see below), whose sum is σ = 116268480. Its totient is φ = 34880508.

The previous prime is 73636649. The next prime is 73636669. The reversal of 73636666 is 66663637.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (73636669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 968866 + ... + 968941.

It is an arithmetic number, because the mean of its divisors is an integer number (14533560).

Almost surely, 2^73636666 is an apocalyptic number.

73636666 is a deficient number, since it is larger than the sum of its proper divisors (42631814).

73636666 is a wasteful number, since it uses less digits than its factorization.

73636666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937828.

The product of its digits is 489888, while the sum is 43.

The square root of 73636666 is about 8581.1809210621. The cubic root of 73636666 is about 419.1454013553.

The spelling of 73636666 in words is "seventy-three million, six hundred thirty-six thousand, six hundred sixty-six".