140864 has 28 divisors (see below), whose sum is σ = 292608. Its totient is φ = 67200.

The previous prime is 140863. The next prime is 140867. The reversal of 140864 is 468041.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1949 + ... + 2019.

2¹⁴⁰⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146304).

140864 is an abundant number, since it is smaller than the sum of its proper divisors (151744).

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

140864 is an equidigital number, since it uses as much as digits as its factorization.

140864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 140864 is about 375.3185313837. The cubic root of 140864 is about 52.0315390525.

The spelling of 140864 in words is "one hundred forty thousand, eight hundred sixty-four".