65394688 has 48 divisors (see below), whose sum is σ = 134447040. Its totient is φ = 31776768.

The previous prime is 65394683. The next prime is 65394709. The reversal of 65394688 is 88649356.

It is a happy number.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65394683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75345 + ... + 76207.

It is an arithmetic number, because the mean of its divisors is an integer number (2800980).

Almost surely, 2^65394688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65394688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67223520).

65394688 is an abundant number, since it is smaller than the sum of its proper divisors (69052352).

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

65394688 is an equidigital number, since it uses as much as digits as its factorization.

65394688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922 (or 902 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 49.

The square root of 65394688 is about 8086.6982137335. The cubic root of 65394688 is about 402.8847455943.

The spelling of 65394688 in words is "sixty-five million, three hundred ninety-four thousand, six hundred eighty-eight".