213458697 has 12 divisors (see below), whose sum is σ = 308651460. Its totient is φ = 142157088.

The previous prime is 213458677. The next prime is 213458701. The reversal of 213458697 is 796854312.

213458697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 112275216 + 101183481 = 10596^2 + 10059^2 .

It is not a de Polignac number, because 213458697 - 2⁶ = 213458633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213458617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2922 + ... + 20867.

It is an arithmetic number, because the mean of its divisors is an integer number (25720955).

Almost surely, 2^213458697 is an apocalyptic number.

It is an amenable number.

213458697 is a deficient number, since it is larger than the sum of its proper divisors (95192763).

213458697 is a wasteful number, since it uses less digits than its factorization.

213458697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24792 (or 24789 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 213458697 is about 14610.2257682761. The cubic root of 213458697 is about 597.6376527326.

The spelling of 213458697 in words is "two hundred thirteen million, four hundred fifty-eight thousand, six hundred ninety-seven".