87213862 has 4 divisors (see below), whose sum is σ = 130820796. Its totient is φ = 43606930.

The previous prime is 87213851. The next prime is 87213869. The reversal of 87213862 is 26831278.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×87213862³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87213869) 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 as a sum of consecutive naturals, namely, 21803464 + ... + 21803467.

It is an arithmetic number, because the mean of its divisors is an integer number (32705199).

Almost surely, 2^87213862 is an apocalyptic number.

87213862 is a deficient number, since it is larger than the sum of its proper divisors (43606934).

87213862 is a wasteful number, since it uses less digits than its factorization.

87213862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43606933.

The product of its digits is 32256, while the sum is 37.

The square root of 87213862 is about 9338.8362229991. The cubic root of 87213862 is about 443.4675427364.

The spelling of 87213862 in words is "eighty-seven million, two hundred thirteen thousand, eight hundred sixty-two".