64542635 has 8 divisors (see below), whose sum is σ = 77520240. Its totient is φ = 51588064.

The previous prime is 64542619. The next prime is 64542649. The reversal of 64542635 is 53624546.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 64542635 - 2⁴ = 64542619 is a prime.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 64542595 and 64542604.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1169 + ... + 11421.

It is an arithmetic number, because the mean of its divisors is an integer number (9690030).

Almost surely, 2^64542635 is an apocalyptic number.

64542635 is a deficient number, since it is larger than the sum of its proper divisors (12977605).

64542635 is a wasteful number, since it uses less digits than its factorization.

64542635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11517.

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

The square root of 64542635 is about 8033.8431027747. The cubic root of 64542635 is about 401.1273095318.

The spelling of 64542635 in words is "sixty-four million, five hundred forty-two thousand, six hundred thirty-five".