213463887 has 16 divisors (see below), whose sum is σ = 350300160. Its totient is φ = 112596192.

The previous prime is 213463871. The next prime is 213463889. The reversal of 213463887 is 788364312.

It is not a de Polignac number, because 213463887 - 2⁴ = 213463871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213463889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 390687 + ... + 391232.

It is an arithmetic number, because the mean of its divisors is an integer number (21893760).

Almost surely, 2^213463887 is an apocalyptic number.

213463887 is a deficient number, since it is larger than the sum of its proper divisors (136836273).

213463887 is a wasteful number, since it uses less digits than its factorization.

213463887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781942.

The product of its digits is 193536, while the sum is 42.

The square root of 213463887 is about 14610.4033825216. The cubic root of 213463887 is about 597.6424963149.

The spelling of 213463887 in words is "two hundred thirteen million, four hundred sixty-three thousand, eight hundred eighty-seven".