65164215 has 16 divisors (see below), whose sum is σ = 107081568. Its totient is φ = 33814656.

The previous prime is 65164207. The next prime is 65164217. The reversal of 65164215 is 51246156.

It is not a de Polignac number, because 65164215 - 2³ = 65164207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65164217) 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, 58152 + ... + 59261.

It is an arithmetic number, because the mean of its divisors is an integer number (6692598).

Almost surely, 2^65164215 is an apocalyptic number.

65164215 is a deficient number, since it is larger than the sum of its proper divisors (41917353).

65164215 is a wasteful number, since it uses less digits than its factorization.

65164215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117458.

The product of its digits is 7200, while the sum is 30.

The square root of 65164215 is about 8072.4355060911. The cubic root of 65164215 is about 402.4108877733.

It can be divided in two parts, 6516 and 4215, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 65164215 in words is "sixty-five million, one hundred sixty-four thousand, two hundred fifteen".