87217385 has 8 divisors (see below), whose sum is σ = 104804736. Its totient is φ = 69678000.

The previous prime is 87217379. The next prime is 87217421. The reversal of 87217385 is 58371278.

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

It is not a de Polignac number, because 87217385 - 2⁶ = 87217321 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7859 + ... + 15368.

It is an arithmetic number, because the mean of its divisors is an integer number (13100592).

Almost surely, 2^87217385 is an apocalyptic number.

It is an amenable number.

87217385 is a deficient number, since it is larger than the sum of its proper divisors (17587351).

87217385 is a wasteful number, since it uses less digits than its factorization.

87217385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23983.

The product of its digits is 94080, while the sum is 41.

The square root of 87217385 is about 9339.0248420271. The cubic root of 87217385 is about 443.4735139398.

The spelling of 87217385 in words is "eighty-seven million, two hundred seventeen thousand, three hundred eighty-five".