10661648 has 10 divisors (see below), whose sum is σ = 20656974. Its totient is φ = 5330816.

The previous prime is 10661611. The next prime is 10661653. The reversal of 10661648 is 84616601.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7661824 + 2999824 = 2768^2 + 1732^2 .

It is a super-2 number, since 2×10661648² = 227341476151808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333161 + ... + 333192.

Almost surely, 2^10661648 is an apocalyptic number.

It is an amenable number.

10661648 is a deficient number, since it is larger than the sum of its proper divisors (9995326).

10661648 is an equidigital number, since it uses as much as digits as its factorization.

10661648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666361 (or 666355 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 10661648 is about 3265.2179100330. The cubic root of 10661648 is about 220.0939543600.

The spelling of 10661648 in words is "ten million, six hundred sixty-one thousand, six hundred forty-eight".