213750866 has 16 divisors (see below), whose sum is σ = 369230400. Its totient is φ = 90907440.

The previous prime is 213750833. The next prime is 213750869. The reversal of 213750866 is 668057312.

213750866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213750869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56441 + ... + 60108.

It is an arithmetic number, because the mean of its divisors is an integer number (23076900).

Almost surely, 2^213750866 is an apocalyptic number.

213750866 is a deficient number, since it is larger than the sum of its proper divisors (155479534).

213750866 is a wasteful number, since it uses less digits than its factorization.

213750866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116689.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 213750866 is about 14620.2211337585. The cubic root of 213750866 is about 597.9101981831.

The spelling of 213750866 in words is "two hundred thirteen million, seven hundred fifty thousand, eight hundred sixty-six".