38785666 has 16 divisors (see below), whose sum is σ = 59189400. Its totient is φ = 19058688.

The previous prime is 38785639. The next prime is 38785679. The reversal of 38785666 is 66658783.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13535041 + 25250625 = 3679^2 + 5025^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33790 + ... + 34918.

Almost surely, 2^38785666 is an apocalyptic number.

38785666 is a deficient number, since it is larger than the sum of its proper divisors (20403734).

38785666 is a wasteful number, since it uses less digits than its factorization.

38785666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413.

The product of its digits is 1451520, while the sum is 49.

The square root of 38785666 is about 6227.8139021650. The cubic root of 38785666 is about 338.4987618019.

The spelling of 38785666 in words is "thirty-eight million, seven hundred eighty-five thousand, six hundred sixty-six".