213727497 has 8 divisors (see below), whose sum is σ = 285080256. Its totient is φ = 142429872.

The previous prime is 213727463. The next prime is 213727511. The reversal of 213727497 is 794727312.

It is a happy number.

213727497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213727497 - 2⁶ = 213727433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213727457) 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, 3678 + ... + 20999.

It is an arithmetic number, because the mean of its divisors is an integer number (35635032).

Almost surely, 2^213727497 is an apocalyptic number.

It is an amenable number.

213727497 is a deficient number, since it is larger than the sum of its proper divisors (71352759).

213727497 is a wasteful number, since it uses less digits than its factorization.

213727497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27567.

The product of its digits is 148176, while the sum is 42.

The square root of 213727497 is about 14619.4219105955. The cubic root of 213727497 is about 597.8884079047. Note that the first 3 decimals are identical.

The spelling of 213727497 in words is "two hundred thirteen million, seven hundred twenty-seven thousand, four hundred ninety-seven".