213065793 has 6 divisors (see below), whose sum is σ = 307761714. Its totient is φ = 142043856.

The previous prime is 213065773. The next prime is 213065819. The reversal of 213065793 is 397560312.

It can be written as a sum of positive squares in only one way, i.e., 183548304 + 29517489 = 13548^2 + 5433^2 .

It is not a de Polignac number, because 213065793 - 2⁵ = 213065761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213065773) 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, 11836980 + ... + 11836997.

It is an arithmetic number, because the mean of its divisors is an integer number (51293619).

Almost surely, 2^213065793 is an apocalyptic number.

It is an amenable number.

213065793 is a deficient number, since it is larger than the sum of its proper divisors (94695921).

213065793 is a wasteful number, since it uses less digits than its factorization.

213065793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23673983 (or 23673980 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 213065793 is about 14596.7733763322. The cubic root of 213065793 is about 597.2707457761.

The spelling of 213065793 in words is "two hundred thirteen million, sixty-five thousand, seven hundred ninety-three".