64808403 has 16 divisors (see below), whose sum is σ = 99812736. Its totient is φ = 36967040.

The previous prime is 64808399. The next prime is 64808467. The reversal of 64808403 is 30480846.

It is not a de Polignac number, because 64808403 - 2² = 64808399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (64808473) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 57201 + ... + 58322.

It is an arithmetic number, because the mean of its divisors is an integer number (6238296).

Almost surely, 2^64808403 is an apocalyptic number.

64808403 is a deficient number, since it is larger than the sum of its proper divisors (35004333).

64808403 is a wasteful number, since it uses less digits than its factorization.

64808403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115554.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 64808403 is about 8050.3666376135. The cubic root of 64808403 is about 401.6771311664.

The spelling of 64808403 in words is "sixty-four million, eight hundred eight thousand, four hundred three".