666588038 has 8 divisors (see below), whose sum is σ = 1000029888. Its totient is φ = 333244744.

The previous prime is 666588031. The next prime is 666588061. The reversal of 666588038 is 830885666.

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

It is a super-2 number, since 2×666588038² = 888679224809378888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666588031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4406 + ... + 36777.

It is an arithmetic number, because the mean of its divisors is an integer number (125003736).

Almost surely, 2^666588038 is an apocalyptic number.

666588038 is a deficient number, since it is larger than the sum of its proper divisors (333441850).

666588038 is a wasteful number, since it uses less digits than its factorization.

666588038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49278.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The square root of 666588038 is about 25818.3662922347. The cubic root of 666588038 is about 873.5461191524.

The spelling of 666588038 in words is "six hundred sixty-six million, five hundred eighty-eight thousand, thirty-eight".