147644 has 12 divisors (see below), whose sum is σ = 295344. Its totient is φ = 63264.

The previous prime is 147629. The next prime is 147647. The reversal of 147644 is 446741.

147644 is an admirable number.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 9.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 147644.

It is not an unprimeable number, because it can be changed into a prime (147647) by changing a digit.

147644 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 in 3 ways as a sum of consecutive naturals, for example, 2609 + ... + 2664.

It is an arithmetic number, because the mean of its divisors is an integer number (24612).

2¹⁴⁷⁶⁴⁴ is an apocalyptic number.

147644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

147644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

147644 is a wasteful number, since it uses less digits than its factorization.

147644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5284 (or 5282 counting only the distinct ones).

The product of its digits is 2688, while the sum is 26.

The square root of 147644 is about 384.2447136917. The cubic root of 147644 is about 52.8532787881.

The spelling of 147644 in words is "one hundred forty-seven thousand, six hundred forty-four".