65449530 has 48 divisors (see below), whose sum is σ = 174329064. Its totient is φ = 17026560.

The previous prime is 65449519. The next prime is 65449543. The reversal of 65449530 is 3594456.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 48483369 + 16966161 = 6963^2 + 4119^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5179 + ... + 12558.

Almost surely, 2^65449530 is an apocalyptic number.

65449530 is an abundant number, since it is smaller than the sum of its proper divisors (108879534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65449530 is a wasteful number, since it uses less digits than its factorization.

65449530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17791 (or 17788 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 65449530 is about 8090.0883802342. The cubic root of 65449530 is about 402.9973379789.

The spelling of 65449530 in words is "sixty-five million, four hundred forty-nine thousand, five hundred thirty".