216500070 has 32 divisors (see below), whose sum is σ = 520012512. Its totient is φ = 57687552.

The previous prime is 216500069. The next prime is 216500099. The reversal of 216500070 is 70005612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54264 + ... + 58116.

It is an arithmetic number, because the mean of its divisors is an integer number (16250391).

Almost surely, 2^216500070 is an apocalyptic number.

216500070 is an abundant number, since it is smaller than the sum of its proper divisors (303512442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216500070 is a wasteful number, since it uses less digits than its factorization.

216500070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5736.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 216500070 is about 14713.9413482588. The cubic root of 216500070 is about 600.4626709121.

Adding to 216500070 its reverse (70005612), we get a palindrome (286505682).

The spelling of 216500070 in words is "two hundred sixteen million, five hundred thousand, seventy".