240824661 has 24 divisors (see below), whose sum is σ = 407483424. Its totient is φ = 125102880.

The previous prime is 240824659. The next prime is 240824723. The reversal of 240824661 is 166428042.

240824661 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 240824661 - 2¹ = 240824659 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240824621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72850 + ... + 76083.

It is an arithmetic number, because the mean of its divisors is an integer number (16978476).

Almost surely, 2^240824661 is an apocalyptic number.

240824661 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

240824661 is a deficient number, since it is larger than the sum of its proper divisors (166658763).

240824661 is a wasteful number, since it uses less digits than its factorization.

240824661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148961 (or 148954 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 240824661 is about 15518.5263797823. The cubic root of 240824661 is about 622.1574690138.

The spelling of 240824661 in words is "two hundred forty million, eight hundred twenty-four thousand, six hundred sixty-one".