65393761 has 4 divisors (see below), whose sum is σ = 68236992. Its totient is φ = 62550532.

The previous prime is 65393737. The next prime is 65393777. The reversal of 65393761 is 16739356.

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 65393761 - 2⁷ = 65393633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65393711) 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, 1421581 + ... + 1421626.

It is an arithmetic number, because the mean of its divisors is an integer number (17059248).

Almost surely, 2^65393761 is an apocalyptic number.

It is an amenable number.

65393761 is a deficient number, since it is larger than the sum of its proper divisors (2843231).

65393761 is a wasteful number, since it uses less digits than its factorization.

65393761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2843230.

The product of its digits is 102060, while the sum is 40.

The square root of 65393761 is about 8086.6408971835. The cubic root of 65393761 is about 402.8828418927.

The spelling of 65393761 in words is "sixty-five million, three hundred ninety-three thousand, seven hundred sixty-one".