64275213 has 4 divisors (see below), whose sum is σ = 85700288. Its totient is φ = 42850140.

The previous prime is 64275203. The next prime is 64275217. The reversal of 64275213 is 31257246.

64275213 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 64275213 - 2⁶ = 64275149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64275217) by changing a digit.

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, 10712533 + ... + 10712538.

It is an arithmetic number, because the mean of its divisors is an integer number (21425072).

Almost surely, 2^64275213 is an apocalyptic number.

It is an amenable number.

64275213 is a deficient number, since it is larger than the sum of its proper divisors (21425075).

64275213 is a wasteful number, since it uses less digits than its factorization.

64275213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21425074.

The product of its digits is 10080, while the sum is 30.

The square root of 64275213 is about 8017.1823604057. The cubic root of 64275213 is about 400.5725405191.

It can be divided in two parts, 642 and 75213, that added together give a triangular number (75855 = T₃₈₉).

The spelling of 64275213 in words is "sixty-four million, two hundred seventy-five thousand, two hundred thirteen".