214187687 has 16 divisors (see below), whose sum is σ = 252037632. Its totient is φ = 178204320.

The previous prime is 214187671. The next prime is 214187689. The reversal of 214187687 is 786781412.

It is not a de Polignac number, because 214187687 - 2⁴ = 214187671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214187689) 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, 48137 + ... + 52397.

It is an arithmetic number, because the mean of its divisors is an integer number (15752352).

Almost surely, 2^214187687 is an apocalyptic number.

214187687 is a deficient number, since it is larger than the sum of its proper divisors (37849945).

214187687 is a wasteful number, since it uses less digits than its factorization.

214187687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4478.

The product of its digits is 150528, while the sum is 44.

The square root of 214187687 is about 14635.1524419802. The cubic root of 214187687 is about 598.3172172232.

The spelling of 214187687 in words is "two hundred fourteen million, one hundred eighty-seven thousand, six hundred eighty-seven".