87340213 has 2 divisors, whose sum is σ = 87340214. Its totient is φ = 87340212.

The previous prime is 87340163. The next prime is 87340217. The reversal of 87340213 is 31204378.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76003524 + 11336689 = 8718^2 + 3367^2 .

It is a cyclic number.

It is not a de Polignac number, because 87340213 - 2¹⁷ = 87209141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87340217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43670106 + 43670107.

It is an arithmetic number, because the mean of its divisors is an integer number (43670107).

Almost surely, 2^87340213 is an apocalyptic number.

It is an amenable number.

87340213 is a deficient number, since it is larger than the sum of its proper divisors (1).

87340213 is an equidigital number, since it uses as much as digits as its factorization.

87340213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 87340213 is about 9345.5985897106. The cubic root of 87340213 is about 443.6815971269.

The spelling of 87340213 in words is "eighty-seven million, three hundred forty thousand, two hundred thirteen".