66240933 has 8 divisors (see below), whose sum is σ = 96350496. Its totient is φ = 40146000.

The previous prime is 66240929. The next prime is 66240971. The reversal of 66240933 is 33904266.

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

It is not a de Polignac number, because 66240933 - 2² = 66240929 is a prime.

It is a super-2 number, since 2×66240933² = 8775722409420978, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2007301 = 66240933 / (6 + 6 + 2 + 4 + 0 + 9 + 3 + 3).

It is a junction number, because it is equal to n+sod(n) for n = 66240894 and 66240903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66240913) 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, 1003618 + ... + 1003683.

It is an arithmetic number, because the mean of its divisors is an integer number (12043812).

Almost surely, 2^66240933 is an apocalyptic number.

It is an amenable number.

66240933 is a deficient number, since it is larger than the sum of its proper divisors (30109563).

66240933 is a wasteful number, since it uses less digits than its factorization.

66240933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007315.

The product of its (nonzero) digits is 23328, while the sum is 33.

The square root of 66240933 is about 8138.8532976089. The cubic root of 66240933 is about 404.6151564496.

The spelling of 66240933 in words is "sixty-six million, two hundred forty thousand, nine hundred thirty-three".