87636273 has 4 divisors (see below), whose sum is σ = 116848368. Its totient is φ = 58424180.

The previous prime is 87636259. The next prime is 87636277. The reversal of 87636273 is 37263678.

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 87636273 - 2¹² = 87632177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87636277) 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, 14606043 + ... + 14606048.

It is an arithmetic number, because the mean of its divisors is an integer number (29212092).

Almost surely, 2^87636273 is an apocalyptic number.

It is an amenable number.

87636273 is a deficient number, since it is larger than the sum of its proper divisors (29212095).

87636273 is a wasteful number, since it uses less digits than its factorization.

87636273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29212094.

The product of its digits is 254016, while the sum is 42.

The square root of 87636273 is about 9361.4247313109. The cubic root of 87636273 is about 444.1823524567.

The spelling of 87636273 in words is "eighty-seven million, six hundred thirty-six thousand, two hundred seventy-three".