213265870 has 8 divisors (see below), whose sum is σ = 383878584. Its totient is φ = 85306344.

The previous prime is 213265859. The next prime is 213265879. The reversal of 213265870 is 78562312.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213265879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10663284 + ... + 10663303.

It is an arithmetic number, because the mean of its divisors is an integer number (47984823).

Almost surely, 2^213265870 is an apocalyptic number.

213265870 is a deficient number, since it is larger than the sum of its proper divisors (170612714).

213265870 is a wasteful number, since it uses less digits than its factorization.

213265870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21326594.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 213265870 is about 14603.6252348518. The cubic root of 213265870 is about 597.4576407124.

The spelling of 213265870 in words is "two hundred thirteen million, two hundred sixty-five thousand, eight hundred seventy".