214664637 has 16 divisors (see below), whose sum is σ = 312744960. Its totient is φ = 129889200.

The previous prime is 214664633. The next prime is 214664657. The reversal of 214664637 is 736466412.

It is a happy number.

It is not a de Polignac number, because 214664637 - 2² = 214664633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 214664595 and 214664604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214664633) 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, 16812 + ... + 26682.

It is an arithmetic number, because the mean of its divisors is an integer number (19546560).

Almost surely, 2^214664637 is an apocalyptic number.

It is an amenable number.

214664637 is a deficient number, since it is larger than the sum of its proper divisors (98080323).

214664637 is a wasteful number, since it uses less digits than its factorization.

214664637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10544.

The product of its digits is 145152, while the sum is 39.

The square root of 214664637 is about 14651.4380522869. The cubic root of 214664637 is about 598.7609959873.

The spelling of 214664637 in words is "two hundred fourteen million, six hundred sixty-four thousand, six hundred thirty-seven".