213686450 has 48 divisors (see below), whose sum is σ = 406607904. Its totient is φ = 83529600.

The previous prime is 213686449. The next prime is 213686453. The reversal of 213686450 is 54686312.

213686450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 213686450.

It is not an unprimeable number, because it can be changed into a prime (213686453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 760310 + ... + 760590.

It is an arithmetic number, because the mean of its divisors is an integer number (8470998).

Almost surely, 2^213686450 is an apocalyptic number.

213686450 is a deficient number, since it is larger than the sum of its proper divisors (192921454).

213686450 is a wasteful number, since it uses less digits than its factorization.

213686450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 213686450 is about 14618.0179915062. The cubic root of 213686450 is about 597.8501300399.

The spelling of 213686450 in words is "two hundred thirteen million, six hundred eighty-six thousand, four hundred fifty".