216654370 has 16 divisors (see below), whose sum is σ = 395471808. Its totient is φ = 85440880.

The previous prime is 216654367. The next prime is 216654377. The reversal of 216654370 is 73456612.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (216654377) 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 7 ways as a sum of consecutive naturals, for example, 151864 + ... + 153283.

It is an arithmetic number, because the mean of its divisors is an integer number (24716988).

Almost surely, 2^216654370 is an apocalyptic number.

216654370 is a deficient number, since it is larger than the sum of its proper divisors (178817438).

216654370 is a wasteful number, since it uses less digits than its factorization.

216654370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305225.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 216654370 is about 14719.1837409552. The cubic root of 216654370 is about 600.6052873216.

The spelling of 216654370 in words is "two hundred sixteen million, six hundred fifty-four thousand, three hundred seventy".