2068978 has 4 divisors (see below), whose sum is σ = 3103470. Its totient is φ = 1034488.

The previous prime is 2068973. The next prime is 2068991. The reversal of 2068978 is 8798602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8798602 = 2 ⋅4399301.

It can be written as a sum of positive squares in only one way, i.e., 1841449 + 227529 = 1357^2 + 477^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2068978.

It is not an unprimeable number, because it can be changed into a prime (2068973) 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, 517243 + ... + 517246.

2^2068978 is an apocalyptic number.

2068978 is a deficient number, since it is larger than the sum of its proper divisors (1034492).

2068978 is a wasteful number, since it uses less digits than its factorization.

2068978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034491.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 2068978 is about 1438.3942435925. The cubic root of 2068978 is about 127.4242122966.

The spelling of 2068978 in words is "two million, sixty-eight thousand, nine hundred seventy-eight".