103663426 has 4 divisors (see below), whose sum is σ = 155495142. Its totient is φ = 51831712.

The previous prime is 103663421. The next prime is 103663447. The reversal of 103663426 is 624366301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 624366301 = 13 ⋅48028177.

It can be written as a sum of positive squares in only one way, i.e., 65853225 + 37810201 = 8115^2 + 6149^2 .

It is a super-2 number, since 2×103663426² = 21492211780114952, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (103663421) 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, 25915855 + ... + 25915858.

Almost surely, 2^103663426 is an apocalyptic number.

103663426 is a deficient number, since it is larger than the sum of its proper divisors (51831716).

103663426 is an equidigital number, since it uses as much as digits as its factorization.

103663426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51831715.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 103663426 is about 10181.5237562950. The cubic root of 103663426 is about 469.7590828068.

The spelling of 103663426 in words is "one hundred three million, six hundred sixty-three thousand, four hundred twenty-six".