64403834 has 16 divisors (see below), whose sum is σ = 105575616. Its totient is φ = 29222400.

The previous prime is 64403827. The next prime is 64403873. The reversal of 64403834 is 43830446.

It is a self number, because there is not a number n which added to its sum of digits gives 64403834.

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, 11819 + ... + 16385.

It is an arithmetic number, because the mean of its divisors is an integer number (6598476).

Almost surely, 2^64403834 is an apocalyptic number.

64403834 is a deficient number, since it is larger than the sum of its proper divisors (41171782).

64403834 is a wasteful number, since it uses less digits than its factorization.

64403834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5221.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 64403834 is about 8025.1999352041. The cubic root of 64403834 is about 400.8395574587.

The spelling of 64403834 in words is "sixty-four million, four hundred three thousand, eight hundred thirty-four".