87244917 has 8 divisors (see below), whose sum is σ = 116388096. Its totient is φ = 58132512.

The previous prime is 87244909. The next prime is 87244933. The reversal of 87244917 is 71944278.

It is a happy number.

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

It is not a de Polignac number, because 87244917 - 2³ = 87244909 is a prime.

It is a super-2 number, since 2×87244917² = 15223351084673778, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87244907) 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, 33 + ... + 13209.

It is an arithmetic number, because the mean of its divisors is an integer number (14548512).

Almost surely, 2^87244917 is an apocalyptic number.

It is an amenable number.

87244917 is a deficient number, since it is larger than the sum of its proper divisors (29143179).

87244917 is a wasteful number, since it uses less digits than its factorization.

87244917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15387.

The product of its digits is 112896, while the sum is 42.

The square root of 87244917 is about 9340.4987554199. The cubic root of 87244917 is about 443.5201729411.

The spelling of 87244917 in words is "eighty-seven million, two hundred forty-four thousand, nine hundred seventeen".