608638703409 has 81 divisors (see below), whose sum is σ = 989297216089. Its totient is φ = 360305861520.

The previous prime is 608638703381. The next prime is 608638703423. The reversal of 608638703409 is 904307836806.

The square root of 608638703409 is 780153.

It is a perfect power (a square), and thus also a powerful number.

608638703409 is a `hidden beast` number, since 60 + 86 + 38 + 70 + 3 + 409 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-608638703409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (608638703489) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1210017052 + ... + 1210017554.

Almost surely, 2^608638703409 is an apocalyptic number.

608638703409 is the 780153-rd square number.

608638703409 is the 390077-th centered octagonal number.

It is an amenable number.

608638703409 is a deficient number, since it is larger than the sum of its proper divisors (380658512680).

608638703409 is an equidigital number, since it uses as much as digits as its factorization.

608638703409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 608638703409 in words is "six hundred eight billion, six hundred thirty-eight million, seven hundred three thousand, four hundred nine".