14987813 has 2 divisors, whose sum is σ = 14987814. Its totient is φ = 14987812.

The previous prime is 14987803. The next prime is 14987851. The reversal of 14987813 is 31878941.

14987813 = 2737² + 2738².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7496644 + 7491169 = 2738^2 + 2737^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14987813 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14987803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7493906 + 7493907.

It is an arithmetic number, because the mean of its divisors is an integer number (7493907).

Almost surely, 2^14987813 is an apocalyptic number.

14987813 is the 2738-th centered square number.

It is an amenable number.

14987813 is a deficient number, since it is larger than the sum of its proper divisors (1).

14987813 is an equidigital number, since it uses as much as digits as its factorization.

14987813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 41.

The square root of 14987813 is about 3871.4096915723. The cubic root of 14987813 is about 246.5543988331.

The spelling of 14987813 in words is "fourteen million, nine hundred eighty-seven thousand, eight hundred thirteen".