10646642 has 4 divisors (see below), whose sum is σ = 15969966. Its totient is φ = 5323320.

The previous prime is 10646627. The next prime is 10646651. The reversal of 10646642 is 24664601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24664601 = 13 ⋅1897277.

It can be written as a sum of positive squares in only one way, i.e., 8826841 + 1819801 = 2971^2 + 1349^2 .

It is a super-2 number, since 2×10646642² = 226701971752328, which contains 22 as substring.

It is an unprimeable number.

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, 2661659 + ... + 2661662.

Almost surely, 2^10646642 is an apocalyptic number.

10646642 is a deficient number, since it is larger than the sum of its proper divisors (5323324).

10646642 is an equidigital number, since it uses as much as digits as its factorization.

10646642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5323323.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 10646642 is about 3262.9192450933. The cubic root of 10646642 is about 219.9906469853.

The spelling of 10646642 in words is "ten million, six hundred forty-six thousand, six hundred forty-two".