65471481 has 12 divisors (see below), whose sum is σ = 95455152. Its totient is φ = 43239096.

The previous prime is 65471477. The next prime is 65471489. The reversal of 65471481 is 18417456.

It is a happy number.

It is not a de Polignac number, because 65471481 - 2² = 65471477 is a prime.

It is a super-2 number, since 2×65471481² = 8573029648666722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65471489) 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, 33031 + ... + 34956.

It is an arithmetic number, because the mean of its divisors is an integer number (7954596).

Almost surely, 2^65471481 is an apocalyptic number.

It is an amenable number.

65471481 is a deficient number, since it is larger than the sum of its proper divisors (29983671).

65471481 is a wasteful number, since it uses less digits than its factorization.

65471481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68100 (or 68097 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 65471481 is about 8091.4449265876. Note that the first 3 decimals coincide. The cubic root of 65471481 is about 403.0423864602.

The spelling of 65471481 in words is "sixty-five million, four hundred seventy-one thousand, four hundred eighty-one".