57447668 has 12 divisors (see below), whose sum is σ = 101570532. Its totient is φ = 28427520.

The previous prime is 57447653. The next prime is 57447671. The reversal of 57447668 is 86674475.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17656804 + 39790864 = 4202^2 + 6308^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73643 + ... + 74418.

It is an arithmetic number, because the mean of its divisors is an integer number (8464211).

Almost surely, 2^57447668 is an apocalyptic number.

It is an amenable number.

57447668 is a deficient number, since it is larger than the sum of its proper divisors (44122864).

57447668 is a wasteful number, since it uses less digits than its factorization.

57447668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148162 (or 148160 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 47.

The square root of 57447668 is about 7579.4239886683. The cubic root of 57447668 is about 385.8550020510.

The spelling of 57447668 in words is "fifty-seven million, four hundred forty-seven thousand, six hundred sixty-eight".