66141091 has 8 divisors (see below), whose sum is σ = 67601600. Its totient is φ = 64696320.

The previous prime is 66141041. The next prime is 66141121. The reversal of 66141091 is 19014166.

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

It is a cyclic number.

It is not a de Polignac number, because 66141091 - 2¹⁷ = 66010019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66141041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4771 + ... + 12451.

It is an arithmetic number, because the mean of its divisors is an integer number (8450200).

Almost surely, 2^66141091 is an apocalyptic number.

66141091 is a deficient number, since it is larger than the sum of its proper divisors (1460509).

66141091 is a wasteful number, since it uses less digits than its factorization.

66141091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7869.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 66141091 is about 8132.7173195679. The cubic root of 66141091 is about 404.4117681109.

The spelling of 66141091 in words is "sixty-six million, one hundred forty-one thousand, ninety-one".