66831105 has 16 divisors (see below), whose sum is σ = 116650944. Its totient is φ = 32402880.

The previous prime is 66831053. The next prime is 66831143. The reversal of 66831105 is 50113866.

It is not a de Polignac number, because 66831105 - 2⁸ = 66830849 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202354 + ... + 202683.

It is an arithmetic number, because the mean of its divisors is an integer number (7290684).

Almost surely, 2^66831105 is an apocalyptic number.

It is an amenable number.

66831105 is a deficient number, since it is larger than the sum of its proper divisors (49819839).

66831105 is a wasteful number, since it uses less digits than its factorization.

66831105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405056.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 66831105 is about 8175.0293577455. The cubic root of 66831105 is about 405.8132416954.

The spelling of 66831105 in words is "sixty-six million, eight hundred thirty-one thousand, one hundred five".