66411041 has 4 divisors (see below), whose sum is σ = 68205972. Its totient is φ = 64616112.

The previous prime is 66411031. The next prime is 66411043. The reversal of 66411041 is 14011466.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37466641 + 28944400 = 6121^2 + 5380^2 .

It is a cyclic number.

It is not a de Polignac number, because 66411041 - 2⁶ = 66410977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66410998 and 66411016.

It is not an unprimeable number, because it can be changed into a prime (66411043) 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, 897410 + ... + 897483.

It is an arithmetic number, because the mean of its divisors is an integer number (17051493).

Almost surely, 2^66411041 is an apocalyptic number.

It is an amenable number.

66411041 is a deficient number, since it is larger than the sum of its proper divisors (1794931).

66411041 is a wasteful number, since it uses less digits than its factorization.

66411041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794930.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 66411041 is about 8149.2969635423. The cubic root of 66411041 is about 404.9612135797.

It can be divided in two parts, 664110 and 41, that multiplied together give a triangular number (27228510 = T₇₃₇₉).

The spelling of 66411041 in words is "sixty-six million, four hundred eleven thousand, forty-one".