215500006 has 8 divisors (see below), whose sum is σ = 328074840. Its totient is φ = 106141728.

The previous prime is 215500001. The next prime is 215500039. The reversal of 215500006 is 600005512.

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 (215500001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 803971 + ... + 804238.

It is an arithmetic number, because the mean of its divisors is an integer number (41009355).

Almost surely, 2^215500006 is an apocalyptic number.

215500006 is a deficient number, since it is larger than the sum of its proper divisors (112574834).

215500006 is a wasteful number, since it uses less digits than its factorization.

215500006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608278.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 215500006 is about 14679.9184602640. The cubic root of 215500006 is about 599.5366849166.

Adding to 215500006 its reverse (600005512), we get a palindrome (815505518).

The spelling of 215500006 in words is "two hundred fifteen million, five hundred thousand, six".