213790647 has 16 divisors (see below), whose sum is σ = 330241280. Its totient is φ = 120491712.

The previous prime is 213790631. The next prime is 213790667. The reversal of 213790647 is 746097312.

It is not a de Polignac number, because 213790647 - 2⁴ = 213790631 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 (213790607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68197 + ... + 71262.

It is an arithmetic number, because the mean of its divisors is an integer number (20640080).

Almost surely, 2^213790647 is an apocalyptic number.

213790647 is a deficient number, since it is larger than the sum of its proper divisors (116450633).

213790647 is a wasteful number, since it uses less digits than its factorization.

213790647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139542.

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 213790647 is about 14621.5815492032. The cubic root of 213790647 is about 597.9472880760.

The spelling of 213790647 in words is "two hundred thirteen million, seven hundred ninety thousand, six hundred forty-seven".