65782061 has 8 divisors (see below), whose sum is σ = 69750720. Its totient is φ = 61824448.

The previous prime is 65782051. The next prime is 65782069. The reversal of 65782061 is 16028756.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65782061 - 2¹⁴ = 65765677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65782069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11720 + ... + 16398.

It is an arithmetic number, because the mean of its divisors is an integer number (8718840).

Almost surely, 2^65782061 is an apocalyptic number.

It is an amenable number.

65782061 is a deficient number, since it is larger than the sum of its proper divisors (3968659).

65782061 is a wasteful number, since it uses less digits than its factorization.

65782061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5523.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 65782061 is about 8110.6140951225. The cubic root of 65782061 is about 403.6786914422.

The spelling of 65782061 in words is "sixty-five million, seven hundred eighty-two thousand, sixty-one".