87398105 has 8 divisors (see below), whose sum is σ = 111047112. Its totient is φ = 65805568.

The previous prime is 87398093. The next prime is 87398111. The reversal of 87398105 is 50189378.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7546009 + 79852096 = 2747^2 + 8936^2 .

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 87398105 - 2¹⁰ = 87397081 is a prime.

It is a Duffinian number.

It is a Curzon 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, 514022 + ... + 514191.

It is an arithmetic number, because the mean of its divisors is an integer number (13880889).

Almost surely, 2^87398105 is an apocalyptic number.

87398105 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

87398105 is a deficient number, since it is larger than the sum of its proper divisors (23649007).

87398105 is a wasteful number, since it uses less digits than its factorization.

87398105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028235.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 87398105 is about 9348.6953635253. The cubic root of 87398105 is about 443.7796044522.

The spelling of 87398105 in words is "eighty-seven million, three hundred ninety-eight thousand, one hundred five".