65239736 has 8 divisors (see below), whose sum is σ = 122324520. Its totient is φ = 32619864.

The previous prime is 65239697. The next prime is 65239747. The reversal of 65239736 is 63793256.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 65239693 and 65239702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4077476 + ... + 4077491.

It is an arithmetic number, because the mean of its divisors is an integer number (15290565).

Almost surely, 2^65239736 is an apocalyptic number.

It is an amenable number.

65239736 is a deficient number, since it is larger than the sum of its proper divisors (57084784).

65239736 is a wasteful number, since it uses less digits than its factorization.

65239736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8154973 (or 8154969 counting only the distinct ones).

The product of its digits is 204120, while the sum is 41.

The square root of 65239736 is about 8077.1118600648. Note that the first 3 decimals coincide. The cubic root of 65239736 is about 402.5662835941.

The spelling of 65239736 in words is "sixty-five million, two hundred thirty-nine thousand, seven hundred thirty-six".