87221343 has 16 divisors (see below), whose sum is σ = 133545600. Its totient is φ = 50078880.

The previous prime is 87221341. The next prime is 87221347. The reversal of 87221343 is 34312278.

It is not a de Polignac number, because 87221343 - 2¹ = 87221341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87221343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87221341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68928 + ... + 70181.

It is an arithmetic number, because the mean of its divisors is an integer number (8346600).

Almost surely, 2^87221343 is an apocalyptic number.

87221343 is a deficient number, since it is larger than the sum of its proper divisors (46324257).

87221343 is a wasteful number, since it uses less digits than its factorization.

87221343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139142.

The product of its digits is 8064, while the sum is 30.

The square root of 87221343 is about 9339.2367461158. The cubic root of 87221343 is about 443.4802222415.

The spelling of 87221343 in words is "eighty-seven million, two hundred twenty-one thousand, three hundred forty-three".