216601670 has 8 divisors (see below), whose sum is σ = 389883024. Its totient is φ = 86640664.

The previous prime is 216601669. The next prime is 216601699. The reversal of 216601670 is 76106612.

216601670 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10830074 + ... + 10830093.

It is an arithmetic number, because the mean of its divisors is an integer number (48735378).

Almost surely, 2^216601670 is an apocalyptic number.

216601670 is a deficient number, since it is larger than the sum of its proper divisors (173281354).

216601670 is a wasteful number, since it uses less digits than its factorization.

216601670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21660174.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 216601670 is about 14717.3934512875. The cubic root of 216601670 is about 600.5565853801.

The spelling of 216601670 in words is "two hundred sixteen million, six hundred one thousand, six hundred seventy".