87213395 has 4 divisors (see below), whose sum is σ = 104656080. Its totient is φ = 69770712.

The previous prime is 87213391. The next prime is 87213443. The reversal of 87213395 is 59331278.

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 87213395 - 2² = 87213391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87213391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8721335 + ... + 8721344.

It is an arithmetic number, because the mean of its divisors is an integer number (26164020).

Almost surely, 2^87213395 is an apocalyptic number.

87213395 is a deficient number, since it is larger than the sum of its proper divisors (17442685).

87213395 is a wasteful number, since it uses less digits than its factorization.

87213395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17442684.

The product of its digits is 45360, while the sum is 38.

The square root of 87213395 is about 9338.8112198502. The cubic root of 87213395 is about 443.4667511967.

The spelling of 87213395 in words is "eighty-seven million, two hundred thirteen thousand, three hundred ninety-five".