65668379 has 8 divisors (see below), whose sum is σ = 76581600. Its totient is φ = 56286888.

The previous prime is 65668373. The next prime is 65668387. The reversal of 65668379 is 97386656.

65668379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 65668379 - 2¹² = 65664283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65668373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95384 + ... + 96069.

It is an arithmetic number, because the mean of its divisors is an integer number (9572700).

Almost surely, 2^65668379 is an apocalyptic number.

65668379 is a deficient number, since it is larger than the sum of its proper divisors (10913221).

65668379 is an equidigital number, since it uses as much as digits as its factorization.

65668379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191474 (or 191460 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 50.

The square root of 65668379 is about 8103.6028407123. The cubic root of 65668379 is about 403.4460167515.

The spelling of 65668379 in words is "sixty-five million, six hundred sixty-eight thousand, three hundred seventy-nine".