66534041 has 4 divisors (see below), whose sum is σ = 76038912. Its totient is φ = 57029172.

The previous prime is 66534011. The next prime is 66534059. The reversal of 66534041 is 14043566.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66534041 - 2⁶ = 66533977 is a prime.

It is a super-2 number, since 2×66534041² = 8853557223579362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66533995 and 66534013.

It is not an unprimeable number, because it can be changed into a prime (66534011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4752425 + ... + 4752438.

It is an arithmetic number, because the mean of its divisors is an integer number (19009728).

Almost surely, 2^66534041 is an apocalyptic number.

It is an amenable number.

66534041 is a deficient number, since it is larger than the sum of its proper divisors (9504871).

66534041 is an equidigital number, since it uses as much as digits as its factorization.

66534041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9504870.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 66534041 is about 8156.8401357388. The cubic root of 66534041 is about 405.2110691706.

The spelling of 66534041 in words is "sixty-six million, five hundred thirty-four thousand, forty-one".