66733994 has 8 divisors (see below), whose sum is σ = 104453280. Its totient is φ = 31916236.

The previous prime is 66733987. The next prime is 66734011. The reversal of 66733994 is 49933766.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 725324 + ... + 725415.

It is an arithmetic number, because the mean of its divisors is an integer number (13056660).

Almost surely, 2^66733994 is an apocalyptic number.

66733994 is a deficient number, since it is larger than the sum of its proper divisors (37719286).

66733994 is a wasteful number, since it uses less digits than its factorization.

66733994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450764.

The product of its digits is 734832, while the sum is 47.

The square root of 66733994 is about 8169.0877091631. The cubic root of 66733994 is about 405.6165865936.

The spelling of 66733994 in words is "sixty-six million, seven hundred thirty-three thousand, nine hundred ninety-four".