101644 has 6 divisors (see below), whose sum is σ = 177884. Its totient is φ = 50820.

The previous prime is 101641. The next prime is 101653. The reversal of 101644 is 446101.

It is a happy number.

101644 is nontrivially palindromic in base 12.

It is not an unprimeable number, because it can be changed into a prime (101641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12702 + ... + 12709.

2¹⁰¹⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

101644 is a deficient number, since it is larger than the sum of its proper divisors (76240).

101644 is a wasteful number, since it uses less digits than its factorization.

101644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25415 (or 25413 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 101644 is about 318.8165616777. The cubic root of 101644 is about 46.6688661095.

Adding to 101644 its reverse (446101), we get a palindrome (547745).

The spelling of 101644 in words is "one hundred one thousand, six hundred forty-four".