65449649 has 8 divisors (see below), whose sum is σ = 67760640. Its totient is φ = 63151200.

The previous prime is 65449627. The next prime is 65449663. The reversal of 65449649 is 94694456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65449649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65449619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8189 + ... + 14069.

It is an arithmetic number, because the mean of its divisors is an integer number (8470080).

Almost surely, 2^65449649 is an apocalyptic number.

It is an amenable number.

65449649 is a deficient number, since it is larger than the sum of its proper divisors (2310991).

65449649 is a wasteful number, since it uses less digits than its factorization.

65449649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6271.

The product of its digits is 933120, while the sum is 47.

The square root of 65449649 is about 8090.0957349094. The cubic root of 65449649 is about 402.9975822213.

The spelling of 65449649 in words is "sixty-five million, four hundred forty-nine thousand, six hundred forty-nine".