87470213 has 4 divisors (see below), whose sum is σ = 89504448. Its totient is φ = 85435980.

The previous prime is 87470203. The next prime is 87470221. The reversal of 87470213 is 31207478.

It is a happy number.

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 87470213 - 2⁴ = 87470197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87470213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87470203) 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, 1017053 + ... + 1017138.

It is an arithmetic number, because the mean of its divisors is an integer number (22376112).

Almost surely, 2^87470213 is an apocalyptic number.

It is an amenable number.

87470213 is a deficient number, since it is larger than the sum of its proper divisors (2034235).

87470213 is a wasteful number, since it uses less digits than its factorization.

87470213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034234.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 87470213 is about 9352.5511492854. The cubic root of 87470213 is about 443.9016180175.

The spelling of 87470213 in words is "eighty-seven million, four hundred seventy thousand, two hundred thirteen".