61065560 has 16 divisors (see below), whose sum is σ = 137397600. Its totient is φ = 24426208.

The previous prime is 61065559. The next prime is 61065583. The reversal of 61065560 is 6556016.

61065560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61065560² = 7458005236227200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763280 + ... + 763359.

It is an arithmetic number, because the mean of its divisors is an integer number (8587350).

Almost surely, 2^61065560 is an apocalyptic number.

It is an amenable number.

61065560 is an abundant number, since it is smaller than the sum of its proper divisors (76332040).

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

61065560 is a wasteful number, since it uses less digits than its factorization.

61065560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526650 (or 1526646 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 61065560 is about 7814.4455977376. The cubic root of 61065560 is about 393.7906933671.

The spelling of 61065560 in words is "sixty-one million, sixty-five thousand, five hundred sixty".