65223015 has 48 divisors (see below), whose sum is σ = 123327360. Its totient is φ = 29178240.

The previous prime is 65222947. The next prime is 65223017. The reversal of 65223015 is 51032256.

It is not a de Polignac number, because 65223015 - 2¹⁰ = 65221991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65223017) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26716 + ... + 29054.

It is an arithmetic number, because the mean of its divisors is an integer number (2569320).

Almost surely, 2^65223015 is an apocalyptic number.

65223015 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

65223015 is a deficient number, since it is larger than the sum of its proper divisors (58104345).

65223015 is a wasteful number, since it uses less digits than its factorization.

65223015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384 (or 2371 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 65223015 is about 8076.0767084024. The cubic root of 65223015 is about 402.5318879614.

The spelling of 65223015 in words is "sixty-five million, two hundred twenty-three thousand, fifteen".