2078791 has 8 divisors (see below), whose sum is σ = 2442384. Its totient is φ = 1744320.

The previous prime is 2078789. The next prime is 2078801. The reversal of 2078791 is 1978702.

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

It is a cyclic number.

It is not a de Polignac number, because 2078791 - 2¹ = 2078789 is a prime.

It is a Duffinian number.

2078791 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2078711) 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 in 7 ways as a sum of consecutive naturals, for example, 7126 + ... + 7411.

It is an arithmetic number, because the mean of its divisors is an integer number (305298).

2^2078791 is an apocalyptic number.

2078791 is a deficient number, since it is larger than the sum of its proper divisors (363593).

2078791 is a wasteful number, since it uses less digits than its factorization.

2078791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14561.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 2078791 is about 1441.8013039251. The cubic root of 2078791 is about 127.6253489796.

It can be divided in two parts, 207 and 8791, that added together give a palindrome (8998).

The spelling of 2078791 in words is "two million, seventy-eight thousand, seven hundred ninety-one".