65320771 has 4 divisors (see below), whose sum is σ = 65347344. Its totient is φ = 65294200.

The previous prime is 65320753. The next prime is 65320861. The reversal of 65320771 is 17702356.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65320771 - 2¹⁷ = 65189699 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65320711) 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, 9175 + ... + 14656.

It is an arithmetic number, because the mean of its divisors is an integer number (16336836).

Almost surely, 2^65320771 is an apocalyptic number.

65320771 is a deficient number, since it is larger than the sum of its proper divisors (26573).

65320771 is a wasteful number, since it uses less digits than its factorization.

65320771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26572.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 65320771 is about 8082.1266384535. The cubic root of 65320771 is about 402.7328919803.

The spelling of 65320771 in words is "sixty-five million, three hundred twenty thousand, seven hundred seventy-one".