87798607 has 4 divisors (see below), whose sum is σ = 94552360. Its totient is φ = 81044856.

The previous prime is 87798587. The next prime is 87798619. The reversal of 87798607 is 70689778.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70689778 = 2 ⋅35344889.

It is a cyclic number.

It is not a de Polignac number, because 87798607 - 2¹¹ = 87796559 is a prime.

It is a super-2 number, since 2×87798607² = 15417190782280898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87798637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3376857 + ... + 3376882.

It is an arithmetic number, because the mean of its divisors is an integer number (23638090).

Almost surely, 2^87798607 is an apocalyptic number.

87798607 is a deficient number, since it is larger than the sum of its proper divisors (6753753).

87798607 is a wasteful number, since it uses less digits than its factorization.

87798607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6753752.

The product of its (nonzero) digits is 1185408, while the sum is 52.

The square root of 87798607 is about 9370.0910881378. The cubic root of 87798607 is about 444.4564452847.

The spelling of 87798607 in words is "eighty-seven million, seven hundred ninety-eight thousand, six hundred seven".