65406406 has 16 divisors (see below), whose sum is σ = 105800688. Its totient is φ = 30146400.

The previous prime is 65406401. The next prime is 65406427. The reversal of 65406406 is 60460456.

65406406 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 not an unprimeable number, because it can be changed into a prime (65406401) by changing a digit.

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, 26401 + ... + 28771.

It is an arithmetic number, because the mean of its divisors is an integer number (6612543).

Almost surely, 2^65406406 is an apocalyptic number.

65406406 is a deficient number, since it is larger than the sum of its proper divisors (40394282).

65406406 is a wasteful number, since it uses less digits than its factorization.

65406406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3447.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 65406406 is about 8087.4227044220. The cubic root of 65406406 is about 402.9088083107.

The spelling of 65406406 in words is "sixty-five million, four hundred six thousand, four hundred six".