66041403 has 8 divisors (see below), whose sum is σ = 88127808. Its totient is φ = 43991304.

The previous prime is 66041401. The next prime is 66041453. The reversal of 66041403 is 30414066.

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

It is not a de Polignac number, because 66041403 - 2¹ = 66041401 is a prime.

It is a super-2 number, since 2×66041403² = 8722933820416818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66041401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4501 + ... + 12342.

It is an arithmetic number, because the mean of its divisors is an integer number (11015976).

Almost surely, 2^66041403 is an apocalyptic number.

66041403 is a deficient number, since it is larger than the sum of its proper divisors (22086405).

66041403 is a wasteful number, since it uses less digits than its factorization.

66041403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18153.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 66041403 is about 8126.5861836321. The cubic root of 66041403 is about 404.2084891760.

Adding to 66041403 its reverse (30414066), we get a palindrome (96455469).

The spelling of 66041403 in words is "sixty-six million, forty-one thousand, four hundred three".