66012411 has 8 divisors (see below), whose sum is σ = 93194064. Its totient is φ = 41419520.

The previous prime is 66012407. The next prime is 66012413. The reversal of 66012411 is 11421066.

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 66012411 - 2² = 66012407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66012413) 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, 647130 + ... + 647231.

It is an arithmetic number, because the mean of its divisors is an integer number (11649258).

Almost surely, 2^66012411 is an apocalyptic number.

66012411 is a deficient number, since it is larger than the sum of its proper divisors (27181653).

66012411 is a wasteful number, since it uses less digits than its factorization.

66012411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294381.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 66012411 is about 8124.8022129772. The cubic root of 66012411 is about 404.1493317018.

Adding to 66012411 its reverse (11421066), we get a palindrome (77433477).

The spelling of 66012411 in words is "sixty-six million, twelve thousand, four hundred eleven".