66411395 has 4 divisors (see below), whose sum is σ = 79693680. Its totient is φ = 53129112.

The previous prime is 66411383. The next prime is 66411409. The reversal of 66411395 is 59311466.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59311466 = 2 ⋅29655733.

It is a cyclic number.

It is not a de Polignac number, because 66411395 - 2⁴ = 66411379 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6641135 + ... + 6641144.

It is an arithmetic number, because the mean of its divisors is an integer number (19923420).

Almost surely, 2^66411395 is an apocalyptic number.

66411395 is a deficient number, since it is larger than the sum of its proper divisors (13282285).

66411395 is a wasteful number, since it uses less digits than its factorization.

66411395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13282284.

The product of its digits is 19440, while the sum is 35.

The square root of 66411395 is about 8149.3186831784. The cubic root of 66411395 is about 404.9619331188.

The spelling of 66411395 in words is "sixty-six million, four hundred eleven thousand, three hundred ninety-five".