16535656 has 8 divisors (see below), whose sum is σ = 31004370. Its totient is φ = 8267824.

The previous prime is 16535653. The next prime is 16535663. The reversal of 16535656 is 65653561.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15602500 + 933156 = 3950^2 + 966^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (16535653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033471 + ... + 1033486.

Almost surely, 2^16535656 is an apocalyptic number.

It is an amenable number.

16535656 is a deficient number, since it is larger than the sum of its proper divisors (14468714).

16535656 is a wasteful number, since it uses less digits than its factorization.

16535656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066963 (or 2066959 counting only the distinct ones).

The product of its digits is 81000, while the sum is 37.

The square root of 16535656 is about 4066.4057839817. The cubic root of 16535656 is about 254.7654179979.

The spelling of 16535656 in words is "sixteen million, five hundred thirty-five thousand, six hundred fifty-six".