87135837 has 8 divisors (see below), whose sum is σ = 117309504. Its totient is φ = 57526368.

The previous prime is 87135827. The next prime is 87135847. The reversal of 87135837 is 73853178.

It is an interprime number because it is at equal distance from previous prime (87135827) and next prime (87135847).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87135837 - 2⁴ = 87135821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87135817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140688 + ... + 141305.

It is an arithmetic number, because the mean of its divisors is an integer number (14663688).

Almost surely, 2^87135837 is an apocalyptic number.

It is an amenable number.

87135837 is a deficient number, since it is larger than the sum of its proper divisors (30173667).

87135837 is a wasteful number, since it uses less digits than its factorization.

87135837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282099.

The product of its digits is 141120, while the sum is 42.

The square root of 87135837 is about 9334.6578405424. The cubic root of 87135837 is about 443.3352553607.

The spelling of 87135837 in words is "eighty-seven million, one hundred thirty-five thousand, eight hundred thirty-seven".