61418568 has 32 divisors (see below), whose sum is σ = 153820800. Its totient is φ = 20436288.

The previous prime is 61418561. The next prime is 61418611. The reversal of 61418568 is 86581416.

It is a Cunningham number, because it is equal to 7837²-1.

It is not an unprimeable number, because it can be changed into a prime (61418561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13713 + ... + 17631.

It is an arithmetic number, because the mean of its divisors is an integer number (4806900).

Almost surely, 2^61418568 is an apocalyptic number.

It is an amenable number.

61418568 is an abundant number, since it is smaller than the sum of its proper divisors (92402232).

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

61418568 is a wasteful number, since it uses less digits than its factorization.

61418568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4581 (or 4577 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 61418568 is about 7836.9999362001. Note that the first 4 decimals coincide. The cubic root of 61418568 is about 394.5480447364.

The spelling of 61418568 in words is "sixty-one million, four hundred eighteen thousand, five hundred sixty-eight".