666072413 has 4 divisors (see below), whose sum is σ = 667830240. Its totient is φ = 664314588.

The previous prime is 666072397. The next prime is 666072431. The reversal of 666072413 is 314270666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 666072413 - 2⁴ = 666072397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666072443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 878345 + ... + 879102.

It is an arithmetic number, because the mean of its divisors is an integer number (166957560).

Almost surely, 2^666072413 is an apocalyptic number.

It is an amenable number.

666072413 is a deficient number, since it is larger than the sum of its proper divisors (1757827).

666072413 is a wasteful number, since it uses less digits than its factorization.

666072413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757826.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 666072413 is about 25808.3787363716. The cubic root of 666072413 is about 873.3208233774.

The spelling of 666072413 in words is "six hundred sixty-six million, seventy-two thousand, four hundred thirteen".