10661842 has 4 divisors (see below), whose sum is σ = 15992766. Its totient is φ = 5330920.

The previous prime is 10661813. The next prime is 10661843. The reversal of 10661842 is 24816601.

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., 8814961 + 1846881 = 2969^2 + 1359^2 .

It is a super-2 number, since 2×10661842² = 227349749665928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10661842.

It is not an unprimeable number, because it can be changed into a prime (10661843) by changing a digit.

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, 2665459 + ... + 2665462.

Almost surely, 2^10661842 is an apocalyptic number.

10661842 is a deficient number, since it is larger than the sum of its proper divisors (5330924).

10661842 is an equidigital number, since it uses as much as digits as its factorization.

10661842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330923.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 10661842 is about 3265.2476169504. The cubic root of 10661842 is about 220.0952892996.

The spelling of 10661842 in words is "ten million, six hundred sixty-one thousand, eight hundred forty-two".