65485638 has 16 divisors (see below), whose sum is σ = 145523760. Its totient is φ = 21828528.

The previous prime is 65485633. The next prime is 65485657. The reversal of 65485638 is 83658456.

65485638 is a `hidden beast` number, since 6 + 5 + 4 + 8 + 5 + 638 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 65485593 and 65485602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65485631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 606295 + ... + 606402.

It is an arithmetic number, because the mean of its divisors is an integer number (9095235).

Almost surely, 2^65485638 is an apocalyptic number.

65485638 is an abundant number, since it is smaller than the sum of its proper divisors (80038122).

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

65485638 is a wasteful number, since it uses less digits than its factorization.

65485638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212708 (or 1212702 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 65485638 is about 8092.3196921526. The cubic root of 65485638 is about 403.0714345269.

The spelling of 65485638 in words is "sixty-five million, four hundred eighty-five thousand, six hundred thirty-eight".