2608993 has 2 divisors, whose sum is σ = 2608994. Its totient is φ = 2608992.

The previous prime is 2608951. The next prime is 2609021. The reversal of 2608993 is 3998062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2534464 + 74529 = 1592^2 + 273^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2608993 is a prime.

2608993 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2608933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1304496 + 1304497.

It is an arithmetic number, because the mean of its divisors is an integer number (1304497).

2^2608993 is an apocalyptic number.

It is an amenable number.

2608993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2608993 is an equidigital number, since it uses as much as digits as its factorization.

2608993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 2608993 is about 1615.2377533973. The cubic root of 2608993 is about 137.6652426600.

The spelling of 2608993 in words is "two million, six hundred eight thousand, nine hundred ninety-three".