214157687 has 16 divisors (see below), whose sum is σ = 230003712. Its totient is φ = 198696960.

The previous prime is 214157681. The next prime is 214157689. The reversal of 214157687 is 786751412.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214157687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214157681) 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, 606503 + ... + 606855.

It is an arithmetic number, because the mean of its divisors is an integer number (14375232).

Almost surely, 2^214157687 is an apocalyptic number.

214157687 is a deficient number, since it is larger than the sum of its proper divisors (15846025).

214157687 is a wasteful number, since it uses less digits than its factorization.

214157687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778.

The product of its digits is 94080, while the sum is 41.

The square root of 214157687 is about 14634.1274765529. The cubic root of 214157687 is about 598.2892816700.

The spelling of 214157687 in words is "two hundred fourteen million, one hundred fifty-seven thousand, six hundred eighty-seven".