64019934 has 24 divisors (see below), whose sum is σ = 151320312. Its totient is φ = 19399920.

The previous prime is 64019933. The next prime is 64019939. The reversal of 64019934 is 43991046.

64019934 is a `hidden beast` number, since 640 + 1 + 9 + 9 + 3 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64019933) 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 11 ways as a sum of consecutive naturals, for example, 161469 + ... + 161864.

It is an arithmetic number, because the mean of its divisors is an integer number (6305013).

Almost surely, 2^64019934 is an apocalyptic number.

64019934 is an abundant number, since it is smaller than the sum of its proper divisors (87300378).

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

64019934 is a wasteful number, since it uses less digits than its factorization.

64019934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323352 (or 323349 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 64019934 is about 8001.2457780023. The cubic root of 64019934 is about 400.0415248557.

The spelling of 64019934 in words is "sixty-four million, nineteen thousand, nine hundred thirty-four".