66246133 has 4 divisors (see below), whose sum is σ = 66436300. Its totient is φ = 66055968.

The previous prime is 66246109. The next prime is 66246143. The reversal of 66246133 is 33164266.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53904964 + 12341169 = 7342^2 + 3513^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66246133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66246095 and 66246104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66246143) 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, 94560 + ... + 95257.

It is an arithmetic number, because the mean of its divisors is an integer number (16609075).

Almost surely, 2^66246133 is an apocalyptic number.

It is an amenable number.

66246133 is a deficient number, since it is larger than the sum of its proper divisors (190167).

66246133 is a wasteful number, since it uses less digits than its factorization.

66246133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190166.

The product of its digits is 15552, while the sum is 31.

The square root of 66246133 is about 8139.1727466617. The cubic root of 66246133 is about 404.6257437792.

The spelling of 66246133 in words is "sixty-six million, two hundred forty-six thousand, one hundred thirty-three".