65040838 has 16 divisors (see below), whose sum is σ = 103026240. Its totient is φ = 30709800.

The previous prime is 65040799. The next prime is 65040863. The reversal of 65040838 is 83804056.

65040838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9993 + ... + 15163.

It is an arithmetic number, because the mean of its divisors is an integer number (6439140).

Almost surely, 2^65040838 is an apocalyptic number.

65040838 is a deficient number, since it is larger than the sum of its proper divisors (37985402).

65040838 is a wasteful number, since it uses less digits than its factorization.

65040838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5523.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 65040838 is about 8064.7900158653. The cubic root of 65040838 is about 402.1567625375.

The spelling of 65040838 in words is "sixty-five million, forty thousand, eight hundred thirty-eight".