87647041 has 2 divisors, whose sum is σ = 87647042. Its totient is φ = 87647040.

The previous prime is 87647033. The next prime is 87647051. The reversal of 87647041 is 14074678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83631025 + 4016016 = 9145^2 + 2004^2 .

It is a cyclic number.

It is not a de Polignac number, because 87647041 - 2³ = 87647033 is a prime.

It is not a weakly prime, because it can be changed into another prime (87647051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43823520 + 43823521.

It is an arithmetic number, because the mean of its divisors is an integer number (43823521).

Almost surely, 2^87647041 is an apocalyptic number.

It is an amenable number.

87647041 is a deficient number, since it is larger than the sum of its proper divisors (1).

87647041 is an equidigital number, since it uses as much as digits as its factorization.

87647041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 87647041 is about 9361.9998397778. Note that the first 3 decimals coincide. The cubic root of 87647041 is about 444.2005441617.

The spelling of 87647041 in words is "eighty-seven million, six hundred forty-seven thousand, forty-one".