1340008577 has 4 divisors (see below), whose sum is σ = 1342099716. Its totient is φ = 1337917440.

The previous prime is 1340008567. The next prime is 1340008591. The reversal of 1340008577 is 7758000431.

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

It can be written as a sum of positive squares in 2 ways, for example, as 890186896 + 449821681 = 29836^2 + 21209^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340008577 - 2⁸ = 1340008321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340008567) 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 in 3 ways as a sum of consecutive naturals, for example, 1044608 + ... + 1045889.

It is an arithmetic number, because the mean of its divisors is an integer number (335524929).

Almost surely, 2^1340008577 is an apocalyptic number.

It is an amenable number.

1340008577 is a deficient number, since it is larger than the sum of its proper divisors (2091139).

1340008577 is an equidigital number, since it uses as much as digits as its factorization.

1340008577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091138.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 1340008577 is about 36606.1275881511. The cubic root of 1340008577 is about 1102.4761236630.

The spelling of 1340008577 in words is "one billion, three hundred forty million, eight thousand, five hundred seventy-seven".