65512947 has 12 divisors (see below), whose sum is σ = 91315784. Its totient is φ = 41775360.

The previous prime is 65512939. The next prime is 65512949. The reversal of 65512947 is 74921556.

It is not a de Polignac number, because 65512947 - 2³ = 65512939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65512949) 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, 19054 + ... + 22227.

Almost surely, 2^65512947 is an apocalyptic number.

65512947 is a deficient number, since it is larger than the sum of its proper divisors (25802837).

65512947 is a wasteful number, since it uses less digits than its factorization.

65512947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41330 (or 41307 counting only the distinct ones).

The product of its digits is 75600, while the sum is 39.

The square root of 65512947 is about 8094.0068569282. The cubic root of 65512947 is about 403.1274567244.

The spelling of 65512947 in words is "sixty-five million, five hundred twelve thousand, nine hundred forty-seven".