64834578 has 24 divisors (see below), whose sum is σ = 145007616. Its totient is φ = 20914200.

The previous prime is 64834559. The next prime is 64834597. The reversal of 64834578 is 87543846.

64834578 is a `hidden beast` number, since 6 + 48 + 34 + 578 = 666.

64834578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (64834559) and next prime (64834597).

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 11 ways as a sum of consecutive naturals, for example, 57538 + ... + 58653.

It is an arithmetic number, because the mean of its divisors is an integer number (6041984).

Almost surely, 2^64834578 is an apocalyptic number.

64834578 is an abundant number, since it is smaller than the sum of its proper divisors (80173038).

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

64834578 is a wasteful number, since it uses less digits than its factorization.

64834578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116230 (or 116227 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 64834578 is about 8051.9921758531. The cubic root of 64834578 is about 401.7312007175.

The spelling of 64834578 in words is "sixty-four million, eight hundred thirty-four thousand, five hundred seventy-eight".