10646656 has 16 divisors (see below), whose sum is σ = 21210390. Its totient is φ = 5323264.

The previous prime is 10646653. The next prime is 10646687. The reversal of 10646656 is 65664601.

It can be written as a sum of positive squares in only one way, i.e., 8904256 + 1742400 = 2984^2 + 1320^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×10646656² = 226702567964672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10646651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41461 + ... + 41716.

Almost surely, 2^10646656 is an apocalyptic number.

10646656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

10646656 is a deficient number, since it is larger than the sum of its proper divisors (10563734).

10646656 is an frugal number, since it uses more digits than its factorization.

10646656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83191 (or 83179 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 10646656 is about 3262.9213904107. The cubic root of 10646656 is about 219.9907434122.

The spelling of 10646656 in words is "ten million, six hundred forty-six thousand, six hundred fifty-six".