87813277 has 4 divisors (see below), whose sum is σ = 87920800. Its totient is φ = 87705756.

The previous prime is 87813223. The next prime is 87813281. The reversal of 87813277 is 77231878.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87813277 - 2¹⁹ = 87288989 is a prime.

It is a super-2 number, since 2×87813277² = 15422343234957458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87813217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52527 + ... + 54172.

It is an arithmetic number, because the mean of its divisors is an integer number (21980200).

Almost surely, 2^87813277 is an apocalyptic number.

It is an amenable number.

87813277 is a deficient number, since it is larger than the sum of its proper divisors (107523).

87813277 is a wasteful number, since it uses less digits than its factorization.

87813277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107522.

The product of its digits is 131712, while the sum is 43.

The square root of 87813277 is about 9370.8738653340. The cubic root of 87813277 is about 444.4811981943.

It can be divided in two parts, 878 and 13277, that multiplied together give a triangular number (11657206 = T₄₈₂₈).

The spelling of 87813277 in words is "eighty-seven million, eight hundred thirteen thousand, two hundred seventy-seven".