61490568 has 32 divisors (see below), whose sum is σ = 154071360. Its totient is φ = 20450880.

The previous prime is 61490551. The next prime is 61490573. The reversal of 61490568 is 86509416.

It is an unprimeable number.

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, 9058 + ... + 14318.

It is an arithmetic number, because the mean of its divisors is an integer number (4814730).

Almost surely, 2^61490568 is an apocalyptic number.

It is an amenable number.

61490568 is an abundant number, since it is smaller than the sum of its proper divisors (92580792).

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

61490568 is a wasteful number, since it uses less digits than its factorization.

61490568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5757 (or 5753 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 61490568 is about 7841.5921852644. The cubic root of 61490568 is about 394.7021586406.

The spelling of 61490568 in words is "sixty-one million, four hundred ninety thousand, five hundred sixty-eight".