65005497 has 20 divisors (see below), whose sum is σ = 97334820. Its totient is φ = 43235424.

The previous prime is 65005489. The next prime is 65005547. The reversal of 65005497 is 79450056.

It can be written as a sum of positive squares in 2 ways, for example, as 44836416 + 20169081 = 6696^2 + 4491^2 .

It is not a de Polignac number, because 65005497 - 2³ = 65005489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65005427) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 52279 + ... + 53507.

It is an arithmetic number, because the mean of its divisors is an integer number (4866741).

Almost surely, 2^65005497 is an apocalyptic number.

It is an amenable number.

65005497 is a deficient number, since it is larger than the sum of its proper divisors (32329323).

65005497 is a wasteful number, since it uses less digits than its factorization.

65005497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1894 (or 1885 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 65005497 is about 8062.5986505593. The cubic root of 65005497 is about 402.0839098622.

The spelling of 65005497 in words is "sixty-five million, five thousand, four hundred ninety-seven".