65215473 has 12 divisors (see below), whose sum is σ = 88573680. Its totient is φ = 42669672.

The previous prime is 65215453. The next prime is 65215481. The reversal of 65215473 is 37451256.

It is not a de Polignac number, because 65215473 - 2⁵ = 65215441 is a prime.

It is a super-2 number, since 2×65215473² = 8506115837227458, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 107136 + ... + 107742.

It is an arithmetic number, because the mean of its divisors is an integer number (7381140).

Almost surely, 2^65215473 is an apocalyptic number.

It is an amenable number.

65215473 is a deficient number, since it is larger than the sum of its proper divisors (23358207).

65215473 is an frugal number, since it uses more digits than its factorization.

65215473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276 (or 669 counting only the distinct ones).

The product of its digits is 25200, while the sum is 33.

The square root of 65215473 is about 8075.6097602596. The cubic root of 65215473 is about 402.5163719020.

The spelling of 65215473 in words is "sixty-five million, two hundred fifteen thousand, four hundred seventy-three".