70887 has 4 divisors (see below), whose sum is σ = 94520. Its totient is φ = 47256.

The previous prime is 70879. The next prime is 70891. The reversal of 70887 is 78807.

It is a happy number.

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

It is not a de Polignac number, because 70887 - 2³ = 70879 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 70887.

It is not an unprimeable number, because it can be changed into a prime (70867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11812 + ... + 11817.

It is an arithmetic number, because the mean of its divisors is an integer number (23630).

2⁷⁰⁸⁸⁷ is an apocalyptic number.

70887 is a deficient number, since it is larger than the sum of its proper divisors (23633).

70887 is a wasteful number, since it uses less digits than its factorization.

70887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23632.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 70887 is about 266.2461267324. The cubic root of 70887 is about 41.3861981111.

The spelling of 70887 in words is "seventy thousand, eight hundred eighty-seven".