87740105 has 4 divisors (see below), whose sum is σ = 105288132. Its totient is φ = 70192080.

The previous prime is 87740099. The next prime is 87740141. The reversal of 87740105 is 50104778.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50104778 = 2 ⋅25052389.

It can be written as a sum of positive squares in 2 ways, for example, as 52823824 + 34916281 = 7268^2 + 5909^2 .

It is not a de Polignac number, because 87740105 - 2¹⁸ = 87477961 is a prime.

It is a super-2 number, since 2×87740105² = 15396652050822050, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 8774006 + ... + 8774015.

It is an arithmetic number, because the mean of its divisors is an integer number (26322033).

Almost surely, 2^87740105 is an apocalyptic number.

It is an amenable number.

87740105 is a deficient number, since it is larger than the sum of its proper divisors (17548027).

87740105 is a wasteful number, since it uses less digits than its factorization.

87740105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17548026.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 87740105 is about 9366.9688266803. The cubic root of 87740105 is about 444.3577065571.

The spelling of 87740105 in words is "eighty-seven million, seven hundred forty thousand, one hundred five".