38407666 has 8 divisors (see below), whose sum is σ = 62848944. Its totient is φ = 17458020.

The previous prime is 38407661. The next prime is 38407673. The reversal of 38407666 is 66670483.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (38407661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 872880 + ... + 872923.

It is an arithmetic number, because the mean of its divisors is an integer number (7856118).

Almost surely, 2^38407666 is an apocalyptic number.

38407666 is a deficient number, since it is larger than the sum of its proper divisors (24441278).

38407666 is a wasteful number, since it uses less digits than its factorization.

38407666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745816.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 38407666 is about 6197.3918707792. The cubic root of 38407666 is about 337.3955151644.

It can be divided in two parts, 38 and 407666, that added together give a palindrome (407704).

The spelling of 38407666 in words is "thirty-eight million, four hundred seven thousand, six hundred sixty-six".