87471827 has 2 divisors, whose sum is σ = 87471828. Its totient is φ = 87471826.

The previous prime is 87471821. The next prime is 87471869. The reversal of 87471827 is 72817478.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87471827 - 2²⁰ = 86423251 is a prime.

It is not a weakly prime, because it can be changed into another prime (87471821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43735913 + 43735914.

It is an arithmetic number, because the mean of its divisors is an integer number (43735914).

Almost surely, 2^87471827 is an apocalyptic number.

87471827 is a deficient number, since it is larger than the sum of its proper divisors (1).

87471827 is an equidigital number, since it uses as much as digits as its factorization.

87471827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 175616, while the sum is 44.

The square root of 87471827 is about 9352.6374355045. The cubic root of 87471827 is about 443.9043482910.

The spelling of 87471827 in words is "eighty-seven million, four hundred seventy-one thousand, eight hundred twenty-seven".