87106477 has 2 divisors, whose sum is σ = 87106478. Its totient is φ = 87106476.

The previous prime is 87106457. The next prime is 87106489. The reversal of 87106477 is 77460178.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79103236 + 8003241 = 8894^2 + 2829^2 .

It is a cyclic number.

It is not a de Polignac number, because 87106477 - 2²³ = 78717869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87106457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43553238 + 43553239.

It is an arithmetic number, because the mean of its divisors is an integer number (43553239).

Almost surely, 2^87106477 is an apocalyptic number.

It is an amenable number.

87106477 is a deficient number, since it is larger than the sum of its proper divisors (1).

87106477 is an equidigital number, since it uses as much as digits as its factorization.

87106477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 87106477 is about 9333.0850740792. The cubic root of 87106477 is about 443.2854565418.

The spelling of 87106477 in words is "eighty-seven million, one hundred six thousand, four hundred seventy-seven".