213616887 has 8 divisors (see below), whose sum is σ = 310715520. Its totient is φ = 129464760.

The previous prime is 213616861. The next prime is 213616889. The reversal of 213616887 is 788616312.

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

It is not a de Polignac number, because 213616887 - 2⁷ = 213616759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213616889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3236587 + ... + 3236652.

It is an arithmetic number, because the mean of its divisors is an integer number (38839440).

Almost surely, 2^213616887 is an apocalyptic number.

213616887 is a deficient number, since it is larger than the sum of its proper divisors (97098633).

213616887 is a wasteful number, since it uses less digits than its factorization.

213616887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6473253.

The product of its digits is 96768, while the sum is 42.

The square root of 213616887 is about 14615.6384396988. The cubic root of 213616887 is about 597.7852487426.

The spelling of 213616887 in words is "two hundred thirteen million, six hundred sixteen thousand, eight hundred eighty-seven".