4978687 has 8 divisors (see below), whose sum is σ = 5705856. Its totient is φ = 4255512.

The previous prime is 4978681. The next prime is 4978697. The reversal of 4978687 is 7868794.

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 4978687 - 2⁷ = 4978559 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4978687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4978681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2508 + ... + 4030.

It is an arithmetic number, because the mean of its divisors is an integer number (713232).

Almost surely, 2^4978687 is an apocalyptic number.

4978687 is a deficient number, since it is larger than the sum of its proper divisors (727169).

4978687 is a wasteful number, since it uses less digits than its factorization.

4978687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997.

The product of its digits is 677376, while the sum is 49.

The square root of 4978687 is about 2231.2971563644. The cubic root of 4978687 is about 170.7542838449.

It can be divided in two parts, 4978 and 687, that added together give a palindrome (5665).

The spelling of 4978687 in words is "four million, nine hundred seventy-eight thousand, six hundred eighty-seven".