65215430 has 32 divisors (see below), whose sum is σ = 135426816. Its totient is φ = 22148064.

The previous prime is 65215427. The next prime is 65215433. The reversal of 65215430 is 3451256.

It is an interprime number because it is at equal distance from previous prime (65215427) and next prime (65215433).

It is a self number, because there is not a number n which added to its sum of digits gives 65215430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65215433) 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, 3137 + ... + 11843.

It is an arithmetic number, because the mean of its divisors is an integer number (4232088).

Almost surely, 2^65215430 is an apocalyptic number.

65215430 is an abundant number, since it is smaller than the sum of its proper divisors (70211386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65215430 is a wasteful number, since it uses less digits than its factorization.

65215430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8828.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 65215430 is about 8075.6070979215. The cubic root of 65215430 is about 402.5162834352.

Adding to 65215430 its reverse (3451256), we get a palindrome (68666686).

The spelling of 65215430 in words is "sixty-five million, two hundred fifteen thousand, four hundred thirty".