65381378 has 8 divisors (see below), whose sum is σ = 98844672. Its totient is φ = 32433156.

The previous prime is 65381377. The next prime is 65381389. The reversal of 65381378 is 87318356.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (65381377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128450 + ... + 128957.

It is an arithmetic number, because the mean of its divisors is an integer number (12355584).

Almost surely, 2^65381378 is an apocalyptic number.

65381378 is a deficient number, since it is larger than the sum of its proper divisors (33463294).

65381378 is a wasteful number, since it uses less digits than its factorization.

65381378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257536.

The product of its digits is 120960, while the sum is 41.

The square root of 65381378 is about 8085.8752154606. The cubic root of 65381378 is about 402.8574102455.

The spelling of 65381378 in words is "sixty-five million, three hundred eighty-one thousand, three hundred seventy-eight".