2617798 has 4 divisors (see below), whose sum is σ = 3926700. Its totient is φ = 1308898.

The previous prime is 2617793. The next prime is 2617799. The reversal of 2617798 is 8977162.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2617798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2617793) 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, 654448 + ... + 654451.

It is an arithmetic number, because the mean of its divisors is an integer number (981675).

2^2617798 is an apocalyptic number.

2617798 is a deficient number, since it is larger than the sum of its proper divisors (1308902).

2617798 is a wasteful number, since it uses less digits than its factorization.

2617798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308901.

The product of its digits is 42336, while the sum is 40.

The square root of 2617798 is about 1617.9610625723. The cubic root of 2617798 is about 137.8199359850.

The spelling of 2617798 in words is "two million, six hundred seventeen thousand, seven hundred ninety-eight".