87630229 has 2 divisors, whose sum is σ = 87630230. Its totient is φ = 87630228.

The previous prime is 87630181. The next prime is 87630233. The reversal of 87630229 is 92203678.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63600625 + 24029604 = 7975^2 + 4902^2 .

It is a cyclic number.

It is not a de Polignac number, because 87630229 - 2¹³ = 87622037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87630239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43815114 + 43815115.

It is an arithmetic number, because the mean of its divisors is an integer number (43815115).

Almost surely, 2^87630229 is an apocalyptic number.

It is an amenable number.

87630229 is a deficient number, since it is larger than the sum of its proper divisors (1).

87630229 is an equidigital number, since it uses as much as digits as its factorization.

87630229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 87630229 is about 9361.1019116341. The cubic root of 87630229 is about 444.1721409322.

The spelling of 87630229 in words is "eighty-seven million, six hundred thirty thousand, two hundred twenty-nine".