1020670705 has 8 divisors (see below), whose sum is σ = 1225004904. Its totient is φ = 816403200.

The previous prime is 1020670699. The next prime is 1020670733. The reversal of 1020670705 is 5070760201.

It can be written as a sum of positive squares in 4 ways, for example, as 1018081 + 1019652624 = 1009^2 + 31932^2 .

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

It is not a de Polignac number, because 1020670705 - 2¹⁷ = 1020539633 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 27775 + ... + 53035.

It is an arithmetic number, because the mean of its divisors is an integer number (153125613).

Almost surely, 2^1020670705 is an apocalyptic number.

It is an amenable number.

1020670705 is a deficient number, since it is larger than the sum of its proper divisors (204334199).

1020670705 is an equidigital number, since it uses as much as digits as its factorization.

1020670705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33347.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 1020670705 is about 31947.9374138613. The cubic root of 1020670705 is about 1006.8432974544.

The spelling of 1020670705 in words is "one billion, twenty million, six hundred seventy thousand, seven hundred five".