87249163 has 2 divisors, whose sum is σ = 87249164. Its totient is φ = 87249162.

The previous prime is 87249161. The next prime is 87249167. The reversal of 87249163 is 36194278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87249163 - 2¹ = 87249161 is a prime.

It is a super-2 number, since 2×87249163² = 15224832888401138, which contains 22 as substring.

Together with 87249161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (87249161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43624581 + 43624582.

It is an arithmetic number, because the mean of its divisors is an integer number (43624582).

Almost surely, 2^87249163 is an apocalyptic number.

87249163 is a deficient number, since it is larger than the sum of its proper divisors (1).

87249163 is an equidigital number, since it uses as much as digits as its factorization.

87249163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 87249163 is about 9340.7260424445. The cubic root of 87249163 is about 443.5273678440.

The spelling of 87249163 in words is "eighty-seven million, two hundred forty-nine thousand, one hundred sixty-three".