66603366 has 12 divisors (see below), whose sum is σ = 144307332. Its totient is φ = 22201116.

The previous prime is 66603353. The next prime is 66603373. The reversal of 66603366 is 66330666.

It is a self number, because there is not a number n which added to its sum of digits gives 66603366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1850076 + ... + 1850111.

It is an arithmetic number, because the mean of its divisors is an integer number (12025611).

Almost surely, 2^66603366 is an apocalyptic number.

66603366 is an abundant number, since it is smaller than the sum of its proper divisors (77703966).

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

66603366 is a wasteful number, since it uses less digits than its factorization.

66603366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3700195 (or 3700192 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 36.

The square root of 66603366 is about 8161.0885303371. The cubic root of 66603366 is about 405.3517565844.

The spelling of 66603366 in words is "sixty-six million, six hundred three thousand, three hundred sixty-six".