65782905 has 32 divisors (see below), whose sum is σ = 109148160. Its totient is φ = 33808320.

The previous prime is 65782891. The next prime is 65782909. The reversal of 65782905 is 50928756.

It is not a de Polignac number, because 65782905 - 2⁶ = 65782841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65782909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50310 + ... + 51600.

It is an arithmetic number, because the mean of its divisors is an integer number (3410880).

Almost surely, 2^65782905 is an apocalyptic number.

It is an amenable number.

65782905 is a deficient number, since it is larger than the sum of its proper divisors (43365255).

65782905 is a wasteful number, since it uses less digits than its factorization.

65782905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 65782905 is about 8110.6661255411. Note that the first 3 decimals coincide. The cubic root of 65782905 is about 403.6804178670.

The spelling of 65782905 in words is "sixty-five million, seven hundred eighty-two thousand, nine hundred five".