213289697 has 6 divisors (see below), whose sum is σ = 214354914. Its totient is φ = 212226560.

The previous prime is 213289673. The next prime is 213289717. The reversal of 213289697 is 796982312.

It is a happy number.

213289697 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 only one way, i.e., 212459776 + 829921 = 14576^2 + 911^2 .

It is not a de Polignac number, because 213289697 - 2¹⁸ = 213027553 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 (213289597) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 233672 + ... + 234582.

It is an arithmetic number, because the mean of its divisors is an integer number (35725819).

Almost surely, 2^213289697 is an apocalyptic number.

It is an amenable number.

213289697 is a deficient number, since it is larger than the sum of its proper divisors (1065217).

213289697 is an frugal number, since it uses more digits than its factorization.

213289697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2079 (or 1168 counting only the distinct ones).

The product of its digits is 326592, while the sum is 47.

The square root of 213289697 is about 14604.4410026540. The cubic root of 213289697 is about 597.4798900814.

The spelling of 213289697 in words is "two hundred thirteen million, two hundred eighty-nine thousand, six hundred ninety-seven".