65648394 has 96 divisors (see below), whose sum is σ = 176117760. Its totient is φ = 17919792.

The previous prime is 65648393. The next prime is 65648399. The reversal of 65648394 is 49384656.

65648394 is a `hidden beast` number, since 6 + 564 + 83 + 9 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65648393) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 77827 + ... + 78665.

It is an arithmetic number, because the mean of its divisors is an integer number (1834560).

Almost surely, 2^65648394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65648394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88058880).

65648394 is an abundant number, since it is smaller than the sum of its proper divisors (110469366).

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

65648394 is a wasteful number, since it uses less digits than its factorization.

65648394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886 (or 874 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 65648394 is about 8102.3696533792. The cubic root of 65648394 is about 403.4050853989.

The spelling of 65648394 in words is "sixty-five million, six hundred forty-eight thousand, three hundred ninety-four".