83081066 has 4 divisors (see below), whose sum is σ = 124621602. Its totient is φ = 41540532.

The previous prime is 83080993. The next prime is 83081069. The reversal of 83081066 is 66018038.

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

It can be written as a sum of positive squares in only one way, i.e., 71757841 + 11323225 = 8471^2 + 3365^2 .

It is not an unprimeable number, because it can be changed into a prime (83081069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20770265 + ... + 20770268.

Almost surely, 2^83081066 is an apocalyptic number.

83081066 is a deficient number, since it is larger than the sum of its proper divisors (41540536).

83081066 is a wasteful number, since it uses less digits than its factorization.

83081066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41540535.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 83081066 is about 9114.8815680732. The cubic root of 83081066 is about 436.3490352411.

The spelling of 83081066 in words is "eighty-three million, eighty-one thousand, sixty-six".