65705790 has 16 divisors (see below), whose sum is σ = 157693968. Its totient is φ = 17521536.

The previous prime is 65705753. The next prime is 65705791. The reversal of 65705790 is 9750756.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65705791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1095067 + ... + 1095126.

It is an arithmetic number, because the mean of its divisors is an integer number (9855873).

Almost surely, 2^65705790 is an apocalyptic number.

65705790 is an abundant number, since it is smaller than the sum of its proper divisors (91988178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65705790 is a wasteful number, since it uses less digits than its factorization.

65705790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190203.

The product of its (nonzero) digits is 66150, while the sum is 39.

The square root of 65705790 is about 8105.9108063191. The cubic root of 65705790 is about 403.5226160416.

The spelling of 65705790 in words is "sixty-five million, seven hundred five thousand, seven hundred ninety".