87417887 has 2 divisors, whose sum is σ = 87417888. Its totient is φ = 87417886.

The previous prime is 87417877. The next prime is 87417899. The reversal of 87417887 is 78871478.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87417887 - 2¹⁰ = 87416863 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87417857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43708943 + 43708944.

It is an arithmetic number, because the mean of its divisors is an integer number (43708944).

Almost surely, 2^87417887 is an apocalyptic number.

87417887 is a deficient number, since it is larger than the sum of its proper divisors (1).

87417887 is an equidigital number, since it uses as much as digits as its factorization.

87417887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 702464, while the sum is 50.

The square root of 87417887 is about 9349.7533122538. The cubic root of 87417887 is about 443.8130841479.

The spelling of 87417887 in words is "eighty-seven million, four hundred seventeen thousand, eight hundred eighty-seven".