87798223 has 4 divisors (see below), whose sum is σ = 87854008. Its totient is φ = 87742440.

The previous prime is 87798211. The next prime is 87798229. The reversal of 87798223 is 32289778.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87798223 - 2⁹ = 87797711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87798229) 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, 25461 + ... + 28702.

It is an arithmetic number, because the mean of its divisors is an integer number (21963502).

Almost surely, 2^87798223 is an apocalyptic number.

87798223 is a deficient number, since it is larger than the sum of its proper divisors (55785).

87798223 is a wasteful number, since it uses less digits than its factorization.

87798223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55784.

The product of its digits is 338688, while the sum is 46.

The square root of 87798223 is about 9370.0705973861. The cubic root of 87798223 is about 444.4557973188.

The spelling of 87798223 in words is "eighty-seven million, seven hundred ninety-eight thousand, two hundred twenty-three".