66357041 has 4 divisors (see below), whose sum is σ = 67900272. Its totient is φ = 64813812.

The previous prime is 66357037. The next prime is 66357043. The reversal of 66357041 is 14075366.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14075366 = 2 ⋅7037683.

It is a cyclic number.

It is not a de Polignac number, because 66357041 - 2² = 66357037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66356989 and 66357007.

It is not an unprimeable number, because it can be changed into a prime (66357043) 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, 771551 + ... + 771636.

It is an arithmetic number, because the mean of its divisors is an integer number (16975068).

Almost surely, 2^66357041 is an apocalyptic number.

It is an amenable number.

66357041 is a deficient number, since it is larger than the sum of its proper divisors (1543231).

66357041 is a wasteful number, since it uses less digits than its factorization.

66357041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543230.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 66357041 is about 8145.9831205325. The cubic root of 66357041 is about 404.8514234256.

The spelling of 66357041 in words is "sixty-six million, three hundred fifty-seven thousand, forty-one".