87261836 has 12 divisors (see below), whose sum is σ = 156835728. Its totient is φ = 42451632.

The previous prime is 87261829. The next prime is 87261847. The reversal of 87261836 is 63816278.

It is a happy number.

It is a super-2 number, since 2×87261836² = 15229256044181792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87261793 and 87261802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294656 + ... + 294951.

It is an arithmetic number, because the mean of its divisors is an integer number (13069644).

Almost surely, 2^87261836 is an apocalyptic number.

It is an amenable number.

87261836 is a deficient number, since it is larger than the sum of its proper divisors (69573892).

87261836 is a wasteful number, since it uses less digits than its factorization.

87261836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589648 (or 589646 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 87261836 is about 9341.4043912037. The cubic root of 87261836 is about 443.5488410212.

The spelling of 87261836 in words is "eighty-seven million, two hundred sixty-one thousand, eight hundred thirty-six".