140647 has 8 divisors (see below), whose sum is σ = 156800. Its totient is φ = 125280.

The previous prime is 140639. The next prime is 140659. The reversal of 140647 is 746041.

140647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140647 - 2³ = 140639 is a prime.

It is a Duffinian number.

140647 is a lucky number.

It is a plaindrome in base 16.

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 140647.

It is not an unprimeable number, because it can be changed into a prime (140617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229 + ... + 577.

It is an arithmetic number, because the mean of its divisors is an integer number (19600).

2¹⁴⁰⁶⁴⁷ is an apocalyptic number.

140647 is a deficient number, since it is larger than the sum of its proper divisors (16153).

140647 is a wasteful number, since it uses less digits than its factorization.

140647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 140647 is about 375.0293321862. The cubic root of 140647 is about 52.0048072479.

Subtracting from 140647 its sum of digits (22), we obtain a square (140625 = 375²).

Adding to 140647 its reverse (746041), we get a palindrome (886688).

It can be divided in two parts, 140 and 647, that added together give a palindrome (787).

The spelling of 140647 in words is "one hundred forty thousand, six hundred forty-seven".