66412039 has 8 divisors (see below), whose sum is σ = 66970800. Its totient is φ = 65856000.

The previous prime is 66412033. The next prime is 66412057. The reversal of 66412039 is 93021466.

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

It is a cyclic number.

It is not a de Polignac number, because 66412039 - 2¹¹ = 66409991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66412039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66412033) 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, 94389 + ... + 95089.

It is an arithmetic number, because the mean of its divisors is an integer number (8371350).

Almost surely, 2^66412039 is an apocalyptic number.

66412039 is a deficient number, since it is larger than the sum of its proper divisors (558761).

66412039 is a wasteful number, since it uses less digits than its factorization.

66412039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 66412039 is about 8149.3581955882. The cubic root of 66412039 is about 404.9632421042.

The spelling of 66412039 in words is "sixty-six million, four hundred twelve thousand, thirty-nine".