65216379 has 8 divisors (see below), whose sum is σ = 91531840. Its totient is φ = 41189256.

The previous prime is 65216357. The next prime is 65216399. The reversal of 65216379 is 97361256.

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

It is not a de Polignac number, because 65216379 - 2¹⁶ = 65150843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65216399) 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, 572017 + ... + 572130.

It is an arithmetic number, because the mean of its divisors is an integer number (11441480).

Almost surely, 2^65216379 is an apocalyptic number.

65216379 is a deficient number, since it is larger than the sum of its proper divisors (26315461).

65216379 is a wasteful number, since it uses less digits than its factorization.

65216379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144169.

The product of its digits is 68040, while the sum is 39.

The square root of 65216379 is about 8075.6658549001. The cubic root of 65216379 is about 402.5182358673.

The spelling of 65216379 in words is "sixty-five million, two hundred sixteen thousand, three hundred seventy-nine".