87418547 has 2 divisors, whose sum is σ = 87418548. Its totient is φ = 87418546.

The previous prime is 87418523. The next prime is 87418603. The reversal of 87418547 is 74581478.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87418547 - 2¹⁴ = 87402163 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 87418498 and 87418507.

It is not a weakly prime, because it can be changed into another prime (87412547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43709273 + 43709274.

It is an arithmetic number, because the mean of its divisors is an integer number (43709274).

Almost surely, 2^87418547 is an apocalyptic number.

87418547 is a deficient number, since it is larger than the sum of its proper divisors (1).

87418547 is an equidigital number, since it uses as much as digits as its factorization.

87418547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 250880, while the sum is 44.

The square root of 87418547 is about 9349.7886072360. The cubic root of 87418547 is about 443.8142010661.

The spelling of 87418547 in words is "eighty-seven million, four hundred eighteen thousand, five hundred forty-seven".