1072747666 has 8 divisors (see below), whose sum is σ = 1639482444. Its totient is φ = 526253520.

The previous prime is 1072747609. The next prime is 1072747679. The reversal of 1072747666 is 6667472701.

It can be written as a sum of positive squares in 2 ways, for example, as 1025344441 + 47403225 = 32021^2 + 6885^2 .

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

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 5060025 + ... + 5060236.

Almost surely, 2^1072747666 is an apocalyptic number.

1072747666 is a deficient number, since it is larger than the sum of its proper divisors (566734778).

1072747666 is a wasteful number, since it uses less digits than its factorization.

1072747666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10120316.

The product of its (nonzero) digits is 592704, while the sum is 46.

The square root of 1072747666 is about 32752.8268398317. The cubic root of 1072747666 is about 1023.6838680960.

The spelling of 1072747666 in words is "one billion, seventy-two million, seven hundred forty-seven thousand, six hundred sixty-six".