66016239 has 8 divisors (see below), whose sum is σ = 89335680. Its totient is φ = 43353816.

The previous prime is 66016207. The next prime is 66016261. The reversal of 66016239 is 93261066.

It is a happy number.

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

It is not a de Polignac number, because 66016239 - 2⁵ = 66016207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66016039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164019 + ... + 164420.

It is an arithmetic number, because the mean of its divisors is an integer number (11166960).

Almost surely, 2^66016239 is an apocalyptic number.

66016239 is a deficient number, since it is larger than the sum of its proper divisors (23319441).

66016239 is a wasteful number, since it uses less digits than its factorization.

66016239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328509.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 66016239 is about 8125.0377845275. The cubic root of 66016239 is about 404.1571436355.

The spelling of 66016239 in words is "sixty-six million, sixteen thousand, two hundred thirty-nine".