213755870 has 8 divisors (see below), whose sum is σ = 384760584. Its totient is φ = 85502344.

The previous prime is 213755827. The next prime is 213755873. The reversal of 213755870 is 78557312.

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 (213755873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10687784 + ... + 10687803.

It is an arithmetic number, because the mean of its divisors is an integer number (48095073).

Almost surely, 2^213755870 is an apocalyptic number.

213755870 is a deficient number, since it is larger than the sum of its proper divisors (171004714).

213755870 is a wasteful number, since it uses less digits than its factorization.

213755870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21375594.

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 213755870 is about 14620.3922655994. The cubic root of 213755870 is about 597.9148639253.

The spelling of 213755870 in words is "two hundred thirteen million, seven hundred fifty-five thousand, eight hundred seventy".