213687084 has 24 divisors (see below), whose sum is σ = 536957680. Its totient is φ = 65749824.

The previous prime is 213687083. The next prime is 213687119. The reversal of 213687084 is 480786312.

213687084 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

213687084 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (213687083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 684739 + ... + 685050.

Almost surely, 2^213687084 is an apocalyptic number.

It is an amenable number.

213687084 is an abundant number, since it is smaller than the sum of its proper divisors (323270596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213687084 is a wasteful number, since it uses less digits than its factorization.

213687084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369809 (or 1369807 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 213687084 is about 14618.0396770566. The cubic root of 213687084 is about 597.8507213059.

The spelling of 213687084 in words is "two hundred thirteen million, six hundred eighty-seven thousand, eighty-four".