64243535 has 8 divisors (see below), whose sum is σ = 77169456. Its totient is φ = 51343360.

The previous prime is 64243519. The next prime is 64243573. The reversal of 64243535 is 53534246.

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

It is not a de Polignac number, because 64243535 - 2⁴ = 64243519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434 + ... + 11343.

It is an arithmetic number, because the mean of its divisors is an integer number (9646182).

Almost surely, 2^64243535 is an apocalyptic number.

64243535 is a deficient number, since it is larger than the sum of its proper divisors (12925921).

64243535 is a wasteful number, since it uses less digits than its factorization.

64243535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12873.

The product of its digits is 43200, while the sum is 32.

The square root of 64243535 is about 8015.2064851755. The cubic root of 64243535 is about 400.5067223933.

The spelling of 64243535 in words is "sixty-four million, two hundred forty-three thousand, five hundred thirty-five".