87320223 has 6 divisors (see below), whose sum is σ = 126129224. Its totient is φ = 58213476.

The previous prime is 87320221. The next prime is 87320243. The reversal of 87320223 is 32202378.

It is not a de Polignac number, because 87320223 - 2¹ = 87320221 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 (87320221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4851115 + ... + 4851132.

Almost surely, 2^87320223 is an apocalyptic number.

87320223 is a deficient number, since it is larger than the sum of its proper divisors (38809001).

87320223 is a wasteful number, since it uses less digits than its factorization.

87320223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9702253 (or 9702250 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 87320223 is about 9344.5290411021. The cubic root of 87320223 is about 443.6477453208.

It can be divided in two parts, 8732022 and 3, that added together give a square (8732025 = 2955²).

The spelling of 87320223 in words is "eighty-seven million, three hundred twenty thousand, two hundred twenty-three".