65090215 has 16 divisors (see below), whose sum is σ = 80679168. Its totient is φ = 50374656.

The previous prime is 65090213. The next prime is 65090227. The reversal of 65090215 is 51209056.

It is a cyclic number.

It is not a de Polignac number, because 65090215 - 2¹ = 65090213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65090213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34794 + ... + 36616.

It is an arithmetic number, because the mean of its divisors is an integer number (5042448).

Almost surely, 2^65090215 is an apocalyptic number.

65090215 is a deficient number, since it is larger than the sum of its proper divisors (15588953).

65090215 is a wasteful number, since it uses less digits than its factorization.

65090215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 65090215 is about 8067.8507051135. The cubic root of 65090215 is about 402.2585051358.

The spelling of 65090215 in words is "sixty-five million, ninety thousand, two hundred fifteen".