65219215 has 8 divisors (see below), whose sum is σ = 78451488. Its totient is φ = 52049760.

The previous prime is 65219201. The next prime is 65219227. The reversal of 65219215 is 51291256.

65219215 is nontrivially palindromic in base 3.

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

It is not a de Polignac number, because 65219215 - 2⁵ = 65219183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13387 + ... + 17596.

It is an arithmetic number, because the mean of its divisors is an integer number (9806436).

Almost surely, 2^65219215 is an apocalyptic number.

65219215 is a deficient number, since it is larger than the sum of its proper divisors (13232273).

65219215 is a wasteful number, since it uses less digits than its factorization.

65219215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31409.

The product of its digits is 5400, while the sum is 31.

The square root of 65219215 is about 8075.8414422276. The cubic root of 65219215 is about 402.5240704199.

The spelling of 65219215 in words is "sixty-five million, two hundred nineteen thousand, two hundred fifteen".