103775644 has 48 divisors (see below), whose sum is σ = 220837120. Its totient is φ = 41679360.

The previous prime is 103775629. The next prime is 103775657. The reversal of 103775644 is 446577301.

It is a super-2 number, since 2×103775644² = 21538768575229472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50599 + ... + 52609.

Almost surely, 2^103775644 is an apocalyptic number.

103775644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103775644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110418560).

103775644 is an abundant number, since it is smaller than the sum of its proper divisors (117061476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

103775644 is a wasteful number, since it uses less digits than its factorization.

103775644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138 (or 2136 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 103775644 is about 10187.0331304065. The cubic root of 103775644 is about 469.9285299504.

The spelling of 103775644 in words is "one hundred three million, seven hundred seventy-five thousand, six hundred forty-four".