16656465 has 16 divisors (see below), whose sum is σ = 30457728. Its totient is φ = 7614336.

The previous prime is 16656463. The next prime is 16656533. The reversal of 16656465 is 56465661.

16656465 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16656465 - 2¹ = 16656463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16656463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79212 + ... + 79421.

It is an arithmetic number, because the mean of its divisors is an integer number (1903608).

Almost surely, 2^16656465 is an apocalyptic number.

16656465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16656465 is a deficient number, since it is larger than the sum of its proper divisors (13801263).

16656465 is a wasteful number, since it uses less digits than its factorization.

16656465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158648.

The product of its digits is 129600, while the sum is 39.

The square root of 16656465 is about 4081.2332694910. The cubic root of 16656465 is about 255.3843492712.

The spelling of 16656465 in words is "sixteen million, six hundred fifty-six thousand, four hundred sixty-five".