65394140 has 24 divisors (see below), whose sum is σ = 156946272. Its totient is φ = 22420800.

The previous prime is 65394137. The next prime is 65394193. The reversal of 65394140 is 4149356.

It is a junction number, because it is equal to n+sod(n) for n = 65394097 and 65394106.

It is a congruent number.

It is an unprimeable number.

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, 233411 + ... + 233690.

It is an arithmetic number, because the mean of its divisors is an integer number (6539428).

Almost surely, 2^65394140 is an apocalyptic number.

It is an amenable number.

65394140 is an abundant number, since it is smaller than the sum of its proper divisors (91552132).

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

65394140 is a wasteful number, since it uses less digits than its factorization.

65394140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467117 (or 467115 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 65394140 is about 8086.6643308598. The cubic root of 65394140 is about 402.8836202152.

The spelling of 65394140 in words is "sixty-five million, three hundred ninety-four thousand, one hundred forty".