66011099 has 8 divisors (see below), whose sum is σ = 82299648. Its totient is φ = 51437160.

The previous prime is 66011093. The next prime is 66011123. The reversal of 66011099 is 99011066.

It is a happy number.

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 66011099 - 2⁸ = 66010843 is a prime.

66011099 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66011093) 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, 428567 + ... + 428720.

It is an arithmetic number, because the mean of its divisors is an integer number (10287456).

Almost surely, 2^66011099 is an apocalyptic number.

66011099 is a deficient number, since it is larger than the sum of its proper divisors (16288549).

66011099 is a wasteful number, since it uses less digits than its factorization.

66011099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857305.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 66011099 is about 8124.7214721491. The cubic root of 66011099 is about 404.1466541879.

The spelling of 66011099 in words is "sixty-six million, eleven thousand, ninety-nine".