66667411 has 8 divisors (see below), whose sum is σ = 67356800. Its totient is φ = 65981952.

The previous prime is 66667399. The next prime is 66667423. The reversal of 66667411 is 11476666.

It is an interprime number because it is at equal distance from previous prime (66667399) and next prime (66667423).

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 66667411 - 2⁷ = 66667283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66667441) 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, 42265 + ... + 43813.

It is an arithmetic number, because the mean of its divisors is an integer number (8419600).

Almost surely, 2^66667411 is an apocalyptic number.

66667411 is a deficient number, since it is larger than the sum of its proper divisors (689389).

66667411 is a wasteful number, since it uses less digits than its factorization.

66667411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1965.

The product of its digits is 36288, while the sum is 37.

The square root of 66667411 is about 8165.0113900717. The cubic root of 66667411 is about 405.4816420945.

The spelling of 66667411 in words is "sixty-six million, six hundred sixty-seven thousand, four hundred eleven".