214687986 has 32 divisors (see below), whose sum is σ = 456200640. Its totient is φ = 67225536.

The previous prime is 214687981. The next prime is 214687987. The reversal of 214687986 is 689786412.

214687986 is a modest number, since divided by 87986 gives 2146 as remainder.

It is not an unprimeable number, because it can be changed into a prime (214687981) 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, 10236 + ... + 23111.

It is an arithmetic number, because the mean of its divisors is an integer number (14256270).

Almost surely, 2^214687986 is an apocalyptic number.

214687986 is an abundant number, since it is smaller than the sum of its proper divisors (241512654).

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

214687986 is a wasteful number, since it uses less digits than its factorization.

214687986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33418.

The product of its digits is 1161216, while the sum is 51.

The square root of 214687986 is about 14652.2348466028. The cubic root of 214687986 is about 598.7827042107.

The spelling of 214687986 in words is "two hundred fourteen million, six hundred eighty-seven thousand, nine hundred eighty-six".