213250665 has 8 divisors (see below), whose sum is σ = 341201088. Its totient is φ = 113733680.

The previous prime is 213250651. The next prime is 213250673. The reversal of 213250665 is 566052312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213250665 - 2⁴ = 213250649 is a prime.

It is a super-2 number, since 2×213250665² = 90951692245884450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7108341 + ... + 7108370.

It is an arithmetic number, because the mean of its divisors is an integer number (42650136).

Almost surely, 2^213250665 is an apocalyptic number.

It is an amenable number.

213250665 is a deficient number, since it is larger than the sum of its proper divisors (127950423).

213250665 is a wasteful number, since it uses less digits than its factorization.

213250665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14216719.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 213250665 is about 14603.1046356588. The cubic root of 213250665 is about 597.4434415982.

The spelling of 213250665 in words is "two hundred thirteen million, two hundred fifty thousand, six hundred sixty-five".