87340081 has 2 divisors, whose sum is σ = 87340082. Its totient is φ = 87340080.

The previous prime is 87340069. The next prime is 87340129. The reversal of 87340081 is 18004378.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83174400 + 4165681 = 9120^2 + 2041^2 .

It is a cyclic number.

It is not a de Polignac number, because 87340081 - 2¹³ = 87331889 is a prime.

It is a super-3 number, since 3×87340081³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (87340031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43670040 + 43670041.

It is an arithmetic number, because the mean of its divisors is an integer number (43670041).

Almost surely, 2^87340081 is an apocalyptic number.

It is an amenable number.

87340081 is a deficient number, since it is larger than the sum of its proper divisors (1).

87340081 is an equidigital number, since it uses as much as digits as its factorization.

87340081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 87340081 is about 9345.5915275599. The cubic root of 87340081 is about 443.6813736101.

The spelling of 87340081 in words is "eighty-seven million, three hundred forty thousand, eighty-one".