216496680 has 32 divisors (see below), whose sum is σ = 649490400. Its totient is φ = 57732416.

The previous prime is 216496667. The next prime is 216496699. The reversal of 216496680 is 86694612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 901950 + ... + 902189.

It is an arithmetic number, because the mean of its divisors is an integer number (20296575).

Almost surely, 2^216496680 is an apocalyptic number.

216496680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216496680 is an abundant number, since it is smaller than the sum of its proper divisors (432993720).

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

216496680 is a wasteful number, since it uses less digits than its factorization.

216496680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804153 (or 1804149 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 216496680 is about 14713.8261509371. The cubic root of 216496680 is about 600.4595368422.

The spelling of 216496680 in words is "two hundred sixteen million, four hundred ninety-six thousand, six hundred eighty".