66733692 has 12 divisors (see below), whose sum is σ = 155711976. Its totient is φ = 22244560.

The previous prime is 66733663. The next prime is 66733697. The reversal of 66733692 is 29633766.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66733697) 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, 2780559 + ... + 2780582.

It is an arithmetic number, because the mean of its divisors is an integer number (12975998).

Almost surely, 2^66733692 is an apocalyptic number.

It is an amenable number.

66733692 is an abundant number, since it is smaller than the sum of its proper divisors (88978284).

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

66733692 is a wasteful number, since it uses less digits than its factorization.

66733692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5561148 (or 5561146 counting only the distinct ones).

The product of its digits is 244944, while the sum is 42.

The square root of 66733692 is about 8169.0692248260. The cubic root of 66733692 is about 405.6159747296.

The spelling of 66733692 in words is "sixty-six million, seven hundred thirty-three thousand, six hundred ninety-two".