66414941 has 4 divisors (see below), whose sum is σ = 66528672. Its totient is φ = 66301212.

The previous prime is 66414923. The next prime is 66414973. The reversal of 66414941 is 14941466.

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 66414941 - 2⁶ = 66414877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66414911) 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, 55985 + ... + 57158.

It is an arithmetic number, because the mean of its divisors is an integer number (16632168).

Almost surely, 2^66414941 is an apocalyptic number.

It is an amenable number.

66414941 is a deficient number, since it is larger than the sum of its proper divisors (113731).

66414941 is a wasteful number, since it uses less digits than its factorization.

66414941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113730.

The product of its digits is 20736, while the sum is 35.

The square root of 66414941 is about 8149.5362444743. The cubic root of 66414941 is about 404.9691405639.

The spelling of 66414941 in words is "sixty-six million, four hundred fourteen thousand, nine hundred forty-one".