87223786 has 8 divisors (see below), whose sum is σ = 140900004. Its totient is φ = 40257120.

The previous prime is 87223781. The next prime is 87223817. The reversal of 87223786 is 68732278.

It can be written as a sum of positive squares in 2 ways, for example, as 66928761 + 20295025 = 8181^2 + 4505^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (87223781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1677355 + ... + 1677406.

Almost surely, 2^87223786 is an apocalyptic number.

87223786 is a deficient number, since it is larger than the sum of its proper divisors (53676218).

87223786 is a wasteful number, since it uses less digits than its factorization.

87223786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3354776.

The product of its digits is 225792, while the sum is 43.

The square root of 87223786 is about 9339.3675374728. The cubic root of 87223786 is about 443.4843627116.

The spelling of 87223786 in words is "eighty-seven million, two hundred twenty-three thousand, seven hundred eighty-six".