38668636 has 6 divisors (see below), whose sum is σ = 67670120. Its totient is φ = 19334316.

The previous prime is 38668633. The next prime is 38668649. The reversal of 38668636 is 63686683.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38668633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4833576 + ... + 4833583.

Almost surely, 2^38668636 is an apocalyptic number.

It is an amenable number.

38668636 is a deficient number, since it is larger than the sum of its proper divisors (29001484).

38668636 is a wasteful number, since it uses less digits than its factorization.

38668636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9667163 (or 9667161 counting only the distinct ones).

The product of its digits is 746496, while the sum is 46.

The square root of 38668636 is about 6218.4110510644. The cubic root of 38668636 is about 338.1579621823.

It can be divided in two parts, 38668 and 636, that added together give a cube (39304 = 34³).

The spelling of 38668636 in words is "thirty-eight million, six hundred sixty-eight thousand, six hundred thirty-six".