61424340 has 48 divisors (see below), whose sum is σ = 181043520. Its totient is φ = 15517440.

The previous prime is 61424323. The next prime is 61424351. The reversal of 61424340 is 4342416.

It is a self number, because there is not a number n which added to its sum of digits gives 61424340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25801 + ... + 28080.

It is an arithmetic number, because the mean of its divisors is an integer number (3771740).

Almost surely, 2^61424340 is an apocalyptic number.

61424340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61424340 is an abundant number, since it is smaller than the sum of its proper divisors (119619180).

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

61424340 is a wasteful number, since it uses less digits than its factorization.

61424340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53912 (or 53910 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 61424340 is about 7837.3681807096. The cubic root of 61424340 is about 394.5604039738.

Adding to 61424340 its reverse (4342416), we get a palindrome (65766756).

The spelling of 61424340 in words is "sixty-one million, four hundred twenty-four thousand, three hundred forty".