2078687 has 4 divisors (see below), whose sum is σ = 2238600. Its totient is φ = 1918776.

The previous prime is 2078677. The next prime is 2078693. The reversal of 2078687 is 7868702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7868702 = 2 ⋅3934351.

It is a cyclic number.

It is not a de Polignac number, because 2078687 - 2⁸ = 2078431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2078687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2078627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79937 + ... + 79962.

It is an arithmetic number, because the mean of its divisors is an integer number (559650).

2^2078687 is an apocalyptic number.

2078687 is a deficient number, since it is larger than the sum of its proper divisors (159913).

2078687 is a wasteful number, since it uses less digits than its factorization.

2078687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159912.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 2078687 is about 1441.7652374780. The cubic root of 2078687 is about 127.6232206179.

The spelling of 2078687 in words is "two million, seventy-eight thousand, six hundred eighty-seven".