66741379 has 4 divisors (see below), whose sum is σ = 67545576. Its totient is φ = 65937184.

The previous prime is 66741361. The next prime is 66741391. The reversal of 66741379 is 97314766.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66741379 - 2⁵ = 66741347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66741329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401974 + ... + 402139.

It is an arithmetic number, because the mean of its divisors is an integer number (16886394).

Almost surely, 2^66741379 is an apocalyptic number.

66741379 is a deficient number, since it is larger than the sum of its proper divisors (804197).

66741379 is an equidigital number, since it uses as much as digits as its factorization.

66741379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804196.

The product of its digits is 190512, while the sum is 43.

The square root of 66741379 is about 8169.5397055158. The cubic root of 66741379 is about 405.6315483237.

The spelling of 66741379 in words is "sixty-six million, seven hundred forty-one thousand, three hundred seventy-nine".