61668342 has 24 divisors (see below), whose sum is σ = 133941600. Its totient is φ = 20505840.

The previous prime is 61668311. The next prime is 61668349. The reversal of 61668342 is 24386616.

61668342 is a `hidden beast` number, since 616 + 6 + 8 + 34 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 61668297 and 61668306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61668349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3784 + ... + 11732.

It is an arithmetic number, because the mean of its divisors is an integer number (5580900).

Almost surely, 2^61668342 is an apocalyptic number.

61668342 is an abundant number, since it is smaller than the sum of its proper divisors (72273258).

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

61668342 is a wasteful number, since it uses less digits than its factorization.

61668342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8388 (or 8385 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 61668342 is about 7852.9193297779. The cubic root of 61668342 is about 395.0821641822.

The spelling of 61668342 in words is "sixty-one million, six hundred sixty-eight thousand, three hundred forty-two".