64535245 has 4 divisors (see below), whose sum is σ = 77442300. Its totient is φ = 51628192.

The previous prime is 64535243. The next prime is 64535257. The reversal of 64535245 is 54253546.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54253546 = 2 ⋅27126773.

It can be written as a sum of positive squares in 2 ways, for example, as 14040009 + 50495236 = 3747^2 + 7106^2 .

It is a cyclic number.

It is not a de Polignac number, because 64535245 - 2¹ = 64535243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64535245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64535243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6453520 + ... + 6453529.

It is an arithmetic number, because the mean of its divisors is an integer number (19360575).

Almost surely, 2^64535245 is an apocalyptic number.

It is an amenable number.

64535245 is a deficient number, since it is larger than the sum of its proper divisors (12907055).

64535245 is a wasteful number, since it uses less digits than its factorization.

64535245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12907054.

The product of its digits is 72000, while the sum is 34.

The square root of 64535245 is about 8033.3831602881. The cubic root of 64535245 is about 401.1119995280. Note that the first 3 decimals are identical.

The spelling of 64535245 in words is "sixty-four million, five hundred thirty-five thousand, two hundred forty-five".