87106457 has 2 divisors, whose sum is σ = 87106458. Its totient is φ = 87106456.

The previous prime is 87106441. The next prime is 87106477. The reversal of 87106457 is 75460178.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58920976 + 28185481 = 7676^2 + 5309^2 .

It is a cyclic number.

It is not a de Polignac number, because 87106457 - 2⁴ = 87106441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87106457.

It is not a weakly prime, because it can be changed into another prime (87106477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43553228 + 43553229.

It is an arithmetic number, because the mean of its divisors is an integer number (43553229).

Almost surely, 2^87106457 is an apocalyptic number.

It is an amenable number.

87106457 is a deficient number, since it is larger than the sum of its proper divisors (1).

87106457 is an equidigital number, since it uses as much as digits as its factorization.

87106457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 87106457 is about 9333.0840026221. The cubic root of 87106457 is about 443.2854226150.

The spelling of 87106457 in words is "eighty-seven million, one hundred six thousand, four hundred fifty-seven".