213446897 has 4 divisors (see below), whose sum is σ = 213696240. Its totient is φ = 213197556.

The previous prime is 213446879. The next prime is 213446911. The reversal of 213446897 is 798644312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213446897 - 2¹⁴ = 213430513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213442897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123383 + ... + 125100.

It is an arithmetic number, because the mean of its divisors is an integer number (53424060).

Almost surely, 2^213446897 is an apocalyptic number.

It is an amenable number.

213446897 is a deficient number, since it is larger than the sum of its proper divisors (249343).

213446897 is an equidigital number, since it uses as much as digits as its factorization.

213446897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249342.

The product of its digits is 290304, while the sum is 44.

The square root of 213446897 is about 14609.8219359443. The cubic root of 213446897 is about 597.6266400568.

The spelling of 213446897 in words is "two hundred thirteen million, four hundred forty-six thousand, eight hundred ninety-seven".