87736549 has 2 divisors, whose sum is σ = 87736550. Its totient is φ = 87736548.

The previous prime is 87736501. The next prime is 87736573. The reversal of 87736549 is 94563778.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85932900 + 1803649 = 9270^2 + 1343^2 .

It is a cyclic number.

It is not a de Polignac number, because 87736549 - 2¹⁷ = 87605477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87736589) 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, 43868274 + 43868275.

It is an arithmetic number, because the mean of its divisors is an integer number (43868275).

Almost surely, 2^87736549 is an apocalyptic number.

It is an amenable number.

87736549 is a deficient number, since it is larger than the sum of its proper divisors (1).

87736549 is an equidigital number, since it uses as much as digits as its factorization.

87736549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 49.

The square root of 87736549 is about 9366.7790088162. The cubic root of 87736549 is about 444.3517033831.

The spelling of 87736549 in words is "eighty-seven million, seven hundred thirty-six thousand, five hundred forty-nine".