66733746 has 8 divisors (see below), whose sum is σ = 133467504. Its totient is φ = 22244580.

The previous prime is 66733703. The next prime is 66733747. The reversal of 66733746 is 64733766.

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

66733746 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 66733698 and 66733707.

It is not an unprimeable number, because it can be changed into a prime (66733747) 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, 5561140 + ... + 5561151.

It is an arithmetic number, because the mean of its divisors is an integer number (16683438).

Almost surely, 2^66733746 is an apocalyptic number.

66733746 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66733746 is a wasteful number, since it uses less digits than its factorization.

66733746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11122296.

The product of its digits is 381024, while the sum is 42.

The square root of 66733746 is about 8169.0725299755. The cubic root of 66733746 is about 405.6160841359.

The spelling of 66733746 in words is "sixty-six million, seven hundred thirty-three thousand, seven hundred forty-six".