66038303 has 8 divisors (see below), whose sum is σ = 67926672. Its totient is φ = 64155456.

The previous prime is 66038299. The next prime is 66038317. The reversal of 66038303 is 30383066.

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

It is a cyclic number.

It is not a de Polignac number, because 66038303 - 2² = 66038299 is a prime.

It is a super-2 number, since 2×66038303² = 8722114926239618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66038363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39776 + ... + 41402.

It is an arithmetic number, because the mean of its divisors is an integer number (8490834).

Almost surely, 2^66038303 is an apocalyptic number.

66038303 is a deficient number, since it is larger than the sum of its proper divisors (1888369).

66038303 is a wasteful number, since it uses less digits than its factorization.

66038303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2761.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 66038303 is about 8126.3954493982. The cubic root of 66038303 is about 404.2021645278.

The spelling of 66038303 in words is "sixty-six million, thirty-eight thousand, three hundred three".