1078666705 has 8 divisors (see below), whose sum is σ = 1296727272. Its totient is φ = 861381888.

The previous prime is 1078666703. The next prime is 1078666723. The reversal of 1078666705 is 5076668701.

It can be written as a sum of positive squares in 4 ways, for example, as 87928129 + 990738576 = 9377^2 + 31476^2 .

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 1078666705 - 2¹ = 1078666703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1078666703) 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, 190872 + ... + 196441.

It is an arithmetic number, because the mean of its divisors is an integer number (162090909).

Almost surely, 2^1078666705 is an apocalyptic number.

It is an amenable number.

1078666705 is a deficient number, since it is larger than the sum of its proper divisors (218060567).

1078666705 is an equidigital number, since it uses as much as digits as its factorization.

1078666705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387875.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 1078666705 is about 32843.0617482597. The cubic root of 1078666705 is about 1025.5631900008.

The spelling of 1078666705 in words is "one billion, seventy-eight million, six hundred sixty-six thousand, seven hundred five".