216146770 has 16 divisors (see below), whose sum is σ = 444644928. Its totient is φ = 74107440.

The previous prime is 216146743. The next prime is 216146771. The reversal of 216146770 is 77641612.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (216146771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1543836 + ... + 1543975.

It is an arithmetic number, because the mean of its divisors is an integer number (27790308).

Almost surely, 2^216146770 is an apocalyptic number.

216146770 is an abundant number, since it is smaller than the sum of its proper divisors (228498158).

216146770 is a wasteful number, since it uses less digits than its factorization.

216146770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3087825.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 216146770 is about 14701.9308255753. The cubic root of 216146770 is about 600.1358673793.

The spelling of 216146770 in words is "two hundred sixteen million, one hundred forty-six thousand, seven hundred seventy".