240669 has 36 divisors (see below), whose sum is σ = 435708. Its totient is φ = 126720.

The previous prime is 240659. The next prime is 240677. The reversal of 240669 is 966042.

It can be written as a sum of positive squares in 2 ways, for example, as 108900 + 131769 = 330^2 + 363^2 .

It is not a de Polignac number, because 240669 - 2¹² = 236573 is a prime.

It is a super-2 number, since 2×240669² = 115843135122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240659) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 14149 + ... + 14165.

It is an arithmetic number, because the mean of its divisors is an integer number (12103).

2²⁴⁰⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

240669 is a deficient number, since it is larger than the sum of its proper divisors (195039).

240669 is a wasteful number, since it uses less digits than its factorization.

240669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58 (or 44 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 240669 is about 490.5802686615. The cubic root of 240669 is about 62.2023392868.

It can be divided in two parts, 240 and 669, that added together give a palindrome (909).

The spelling of 240669 in words is "two hundred forty thousand, six hundred sixty-nine".