65449517 has 4 divisors (see below), whose sum is σ = 74799456. Its totient is φ = 56099580.

The previous prime is 65449511. The next prime is 65449519. The reversal of 65449517 is 71594456.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65449517 - 2¹² = 65445421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65449511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4674959 + ... + 4674972.

It is an arithmetic number, because the mean of its divisors is an integer number (18699864).

Almost surely, 2^65449517 is an apocalyptic number.

It is an amenable number.

65449517 is a deficient number, since it is larger than the sum of its proper divisors (9349939).

65449517 is an equidigital number, since it uses as much as digits as its factorization.

65449517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9349938.

The product of its digits is 151200, while the sum is 41.

The square root of 65449517 is about 8090.0875767818. The cubic root of 65449517 is about 402.9973112969.

It can be divided in two parts, 6544 and 9517, that added together give a palindrome (16061).

The spelling of 65449517 in words is "sixty-five million, four hundred forty-nine thousand, five hundred seventeen".