65285388 has 72 divisors (see below), whose sum is σ = 191842560. Its totient is φ = 18332640.

The previous prime is 65285383. The next prime is 65285399. The reversal of 65285388 is 88358256.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (65285383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12673 + ... + 17063.

It is an arithmetic number, because the mean of its divisors is an integer number (2664480).

Almost surely, 2^65285388 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 65285388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95921280).

65285388 is an abundant number, since it is smaller than the sum of its proper divisors (126557172).

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

65285388 is a wasteful number, since it uses less digits than its factorization.

65285388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4467 (or 4462 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The square root of 65285388 is about 8079.9373759949. The cubic root of 65285388 is about 402.6601613035.

The spelling of 65285388 in words is "sixty-five million, two hundred eighty-five thousand, three hundred eighty-eight".