66752841 has 4 divisors (see below), whose sum is σ = 89003792. Its totient is φ = 44501892.

The previous prime is 66752779. The next prime is 66752843. The reversal of 66752841 is 14825766.

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 not a de Polignac number, because 66752841 - 2⁷ = 66752713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66752841.

It is not an unprimeable number, because it can be changed into a prime (66752843) 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, 11125471 + ... + 11125476.

It is an arithmetic number, because the mean of its divisors is an integer number (22250948).

Almost surely, 2^66752841 is an apocalyptic number.

It is an amenable number.

66752841 is a deficient number, since it is larger than the sum of its proper divisors (22250951).

66752841 is a wasteful number, since it uses less digits than its factorization.

66752841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22250950.

The product of its digits is 80640, while the sum is 39.

The square root of 66752841 is about 8170.2411837106. The cubic root of 66752841 is about 405.6547677154.

The spelling of 66752841 in words is "sixty-six million, seven hundred fifty-two thousand, eight hundred forty-one".