1073666566 has 8 divisors (see below), whose sum is σ = 1840571280. Its totient is φ = 460142808.

The previous prime is 1073666533. The next prime is 1073666567. The reversal of 1073666566 is 6656663701.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1073666567) 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, 38345221 + ... + 38345248.

It is an arithmetic number, because the mean of its divisors is an integer number (230071410).

Almost surely, 2^1073666566 is an apocalyptic number.

1073666566 is a deficient number, since it is larger than the sum of its proper divisors (766904714).

1073666566 is an equidigital number, since it uses as much as digits as its factorization.

1073666566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76690478.

The product of its (nonzero) digits is 816480, while the sum is 46.

The square root of 1073666566 is about 32766.8516339303. The cubic root of 1073666566 is about 1023.9760755671.

The spelling of 1073666566 in words is "one billion, seventy-three million, six hundred sixty-six thousand, five hundred sixty-six".