87220343 has 6 divisors (see below), whose sum is σ = 101460456. Its totient is φ = 74760252.

The previous prime is 87220333. The next prime is 87220381. The reversal of 87220343 is 34302278.

It is a de Polignac number, because none of the positive numbers 2^k-87220343 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 (87220333) 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, 889955 + ... + 890052.

It is an arithmetic number, because the mean of its divisors is an integer number (16910076).

Almost surely, 2^87220343 is an apocalyptic number.

87220343 is a deficient number, since it is larger than the sum of its proper divisors (14240113).

87220343 is a wasteful number, since it uses less digits than its factorization.

87220343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780021 (or 1780014 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 87220343 is about 9339.1832083968. The cubic root of 87220343 is about 443.4785273891.

The spelling of 87220343 in words is "eighty-seven million, two hundred twenty thousand, three hundred forty-three".