64545213 has 16 divisors (see below), whose sum is σ = 90256320. Its totient is φ = 40973184.

The previous prime is 64545211. The next prime is 64545227. The reversal of 64545213 is 31254546.

It is not a de Polignac number, because 64545213 - 2¹ = 64545211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64545211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1270 + ... + 11432.

It is an arithmetic number, because the mean of its divisors is an integer number (5641020).

Almost surely, 2^64545213 is an apocalyptic number.

It is an amenable number.

64545213 is a deficient number, since it is larger than the sum of its proper divisors (25711107).

64545213 is a wasteful number, since it uses less digits than its factorization.

64545213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10268.

The product of its digits is 14400, while the sum is 30.

The square root of 64545213 is about 8034.0035474227. The cubic root of 64545213 is about 401.1326501485.

Adding to 64545213 its reverse (31254546), we get a palindrome (95799759).

The spelling of 64545213 in words is "sixty-four million, five hundred forty-five thousand, two hundred thirteen".