87424217 has 8 divisors (see below), whose sum is σ = 93871872. Its totient is φ = 81121600.

The previous prime is 87424153. The next prime is 87424231. The reversal of 87424217 is 71242478.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87424217 - 2⁶ = 87424153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87424297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35009 + ... + 37422.

It is an arithmetic number, because the mean of its divisors is an integer number (11733984).

Almost surely, 2^87424217 is an apocalyptic number.

It is an amenable number.

87424217 is a deficient number, since it is larger than the sum of its proper divisors (6447655).

87424217 is a wasteful number, since it uses less digits than its factorization.

87424217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72519.

The product of its digits is 25088, while the sum is 35.

The square root of 87424217 is about 9350.0918177310. The cubic root of 87424217 is about 443.8237961776.

The spelling of 87424217 in words is "eighty-seven million, four hundred twenty-four thousand, two hundred seventeen".