140584 has 8 divisors (see below), whose sum is σ = 263610. Its totient is φ = 70288.

The previous prime is 140557. The next prime is 140587. The reversal of 140584 is 485041.

It can be written as a sum of positive squares in only one way, i.e., 108900 + 31684 = 330^2 + 178^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×140584² = 39527722112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140587) by changing a digit.

140584 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8779 + ... + 8794.

2¹⁴⁰⁵⁸⁴ is an apocalyptic number.

It is an amenable number.

140584 is a deficient number, since it is larger than the sum of its proper divisors (123026).

140584 is a wasteful number, since it uses less digits than its factorization.

140584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17579 (or 17575 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 140584 is about 374.9453293482. The cubic root of 140584 is about 51.9970412518.

The spelling of 140584 in words is "one hundred forty thousand, five hundred eighty-four".