87217005 has 8 divisors (see below), whose sum is σ = 139547232. Its totient is φ = 46515728.

The previous prime is 87217003. The next prime is 87217033. The reversal of 87217005 is 50071278.

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 87217005 - 2¹ = 87217003 is a prime.

It is a super-2 number, since 2×87217005² = 15213611922340050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87217003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2907219 + ... + 2907248.

It is an arithmetic number, because the mean of its divisors is an integer number (17443404).

Almost surely, 2^87217005 is an apocalyptic number.

It is an amenable number.

87217005 is a deficient number, since it is larger than the sum of its proper divisors (52330227).

87217005 is a wasteful number, since it uses less digits than its factorization.

87217005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5814475.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 87217005 is about 9339.0044972684. The cubic root of 87217005 is about 443.4728698779.

The spelling of 87217005 in words is "eighty-seven million, two hundred seventeen thousand, five".