70087 has 4 divisors (see below), whose sum is σ = 70840. Its totient is φ = 69336.

The previous prime is 70079. The next prime is 70099. The reversal of 70087 is 78007.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 70087 - 2³ = 70079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70067) 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, 213 + ... + 430.

It is an arithmetic number, because the mean of its divisors is an integer number (17710).

2⁷⁰⁰⁸⁷ is an apocalyptic number.

70087 is a deficient number, since it is larger than the sum of its proper divisors (753).

70087 is a wasteful number, since it uses less digits than its factorization.

70087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 70087 is about 264.7394945980. The cubic root of 70087 is about 41.2299198257.

It can be divided in two parts, 700 and 87, that added together give a palindrome (787).

The spelling of 70087 in words is "seventy thousand, eighty-seven".