10661738 has 4 divisors (see below), whose sum is σ = 15992610. Its totient is φ = 5330868.

The previous prime is 10661711. The next prime is 10661741. The reversal of 10661738 is 83716601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10195249 + 466489 = 3193^2 + 683^2 .

It is a super-2 number, since 2×10661738² = 227345314361288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2665433 + ... + 2665436.

Almost surely, 2^10661738 is an apocalyptic number.

10661738 is a deficient number, since it is larger than the sum of its proper divisors (5330872).

10661738 is an equidigital number, since it uses as much as digits as its factorization.

10661738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330871.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 10661738 is about 3265.2316916262. The cubic root of 10661738 is about 220.0945736639.

The spelling of 10661738 in words is "ten million, six hundred sixty-one thousand, seven hundred thirty-eight".