64564235 has 4 divisors (see below), whose sum is σ = 77477088. Its totient is φ = 51651384.

The previous prime is 64564219. The next prime is 64564271. The reversal of 64564235 is 53246546.

It is a happy number.

64564235 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53246546 = 2 ⋅26623273.

It is a cyclic number.

It is not a de Polignac number, because 64564235 - 2⁴ = 64564219 is a prime.

It is a super-2 number, since 2×64564235² = 8337080882270450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64564195 and 64564204.

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, 6456419 + ... + 6456428.

It is an arithmetic number, because the mean of its divisors is an integer number (19369272).

Almost surely, 2^64564235 is an apocalyptic number.

64564235 is a deficient number, since it is larger than the sum of its proper divisors (12912853).

64564235 is a wasteful number, since it uses less digits than its factorization.

64564235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12912852.

The product of its digits is 86400, while the sum is 35.

The square root of 64564235 is about 8035.1873033552. The cubic root of 64564235 is about 401.1720519645.

The spelling of 64564235 in words is "sixty-four million, five hundred sixty-four thousand, two hundred thirty-five".