10661426 has 4 divisors (see below), whose sum is σ = 15992142. Its totient is φ = 5330712.

The previous prime is 10661423. The next prime is 10661449. The reversal of 10661426 is 62416601.

It is a happy number.

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., 5755201 + 4906225 = 2399^2 + 2215^2 .

It is a super-2 number, since 2×10661426² = 227332008706952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10661395 and 10661404.

It is not an unprimeable number, because it can be changed into a prime (10661423) 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, 2665355 + ... + 2665358.

Almost surely, 2^10661426 is an apocalyptic number.

10661426 is a deficient number, since it is larger than the sum of its proper divisors (5330716).

10661426 is an equidigital number, since it uses as much as digits as its factorization.

10661426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330715.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 10661426 is about 3265.1839151876. The cubic root of 10661426 is about 220.0924267288.

It can be divided in two parts, 106 and 61426, that multiplied together give a palindrome (6511156).

The spelling of 10661426 in words is "ten million, six hundred sixty-one thousand, four hundred twenty-six".