57661360 has 20 divisors (see below), whose sum is σ = 134062848. Its totient is φ = 23064512.

The previous prime is 57661343. The next prime is 57661363. The reversal of 57661360 is 6316675.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (57661363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360304 + ... + 360463.

Almost surely, 2^57661360 is an apocalyptic number.

It is an amenable number.

57661360 is an abundant number, since it is smaller than the sum of its proper divisors (76401488).

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

57661360 is a wasteful number, since it uses less digits than its factorization.

57661360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720780 (or 720774 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 57661360 is about 7593.5077533377. The cubic root of 57661360 is about 386.3328404268.

The spelling of 57661360 in words is "fifty-seven million, six hundred sixty-one thousand, three hundred sixty".