57666448 has 80 divisors (see below), whose sum is σ = 139705344. Its totient is φ = 22487040.

The previous prime is 57666439. The next prime is 57666449. The reversal of 57666448 is 84466675.

It is a junction number, because it is equal to n+sod(n) for n = 57666398 and 57666407.

It is not an unprimeable number, because it can be changed into a prime (57666449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58536 + ... + 59512.

Almost surely, 2^57666448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57666448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69852672).

57666448 is an abundant number, since it is smaller than the sum of its proper divisors (82038896).

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

57666448 is a wasteful number, since it uses less digits than its factorization.

57666448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040 (or 1034 counting only the distinct ones).

The product of its digits is 967680, while the sum is 46.

The square root of 57666448 is about 7593.8427689807. The cubic root of 57666448 is about 386.3442033434.

The spelling of 57666448 in words is "fifty-seven million, six hundred sixty-six thousand, four hundred forty-eight".