16220668 has 6 divisors (see below), whose sum is σ = 28386176. Its totient is φ = 8110332.

The previous prime is 16220641. The next prime is 16220671. The reversal of 16220668 is 86602261.

It is a super-2 number, since 2×16220668² = 526220140732448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2027580 + ... + 2027587.

Almost surely, 2^16220668 is an apocalyptic number.

It is an amenable number.

16220668 is a deficient number, since it is larger than the sum of its proper divisors (12165508).

16220668 is a wasteful number, since it uses less digits than its factorization.

16220668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4055171 (or 4055169 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 16220668 is about 4027.4890440571. The cubic root of 16220668 is about 253.1373592096.

The spelling of 16220668 in words is "sixteen million, two hundred twenty thousand, six hundred sixty-eight".