216949612 has 36 divisors (see below), whose sum is σ = 419888448. Its totient is φ = 98005600.

The previous prime is 216949589. The next prime is 216949613.

216949612 is nontrivially palindromic in base 10.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (216949613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82437 + ... + 85027.

It is an arithmetic number, because the mean of its divisors is an integer number (11663568).

Almost surely, 2^216949612 is an apocalyptic number.

216949612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

216949612 is a deficient number, since it is larger than the sum of its proper divisors (202938836).

216949612 is a wasteful number, since it uses less digits than its factorization.

216949612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2790 (or 2777 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The square root of 216949612 is about 14729.2094832004. The cubic root of 216949612 is about 600.8779849810.

The spelling of 216949612 in words is "two hundred sixteen million, nine hundred forty-nine thousand, six hundred twelve".