64538434 has 8 divisors (see below), whose sum is σ = 99424188. Its totient is φ = 31397040.

The previous prime is 64538423. The next prime is 64538447. The reversal of 64538434 is 43483546.

64538434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 63250209 + 1288225 = 7953^2 + 1135^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 64538393 and 64538402.

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 3 ways as a sum of consecutive naturals, for example, 435997 + ... + 436144.

Almost surely, 2^64538434 is an apocalyptic number.

64538434 is a deficient number, since it is larger than the sum of its proper divisors (34885754).

64538434 is a wasteful number, since it uses less digits than its factorization.

64538434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872180.

The product of its digits is 138240, while the sum is 37.

The square root of 64538434 is about 8033.5816420822. The cubic root of 64538434 is about 401.1186063834.

The spelling of 64538434 in words is "sixty-four million, five hundred thirty-eight thousand, four hundred thirty-four".