64823213 has 32 divisors (see below), whose sum is σ = 82575360. Its totient is φ = 49533120.

The previous prime is 64823191. The next prime is 64823219. The reversal of 64823213 is 31232846.

It is not a de Polignac number, because 64823213 - 2⁸ = 64822957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64823219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 510356 + ... + 510482.

It is an arithmetic number, because the mean of its divisors is an integer number (2580480).

Almost surely, 2^64823213 is an apocalyptic number.

It is an amenable number.

64823213 is a deficient number, since it is larger than the sum of its proper divisors (17752147).

64823213 is a wasteful number, since it uses less digits than its factorization.

64823213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297.

The product of its digits is 6912, while the sum is 29.

The square root of 64823213 is about 8051.2864189519. The cubic root of 64823213 is about 401.7077258885.

The spelling of 64823213 in words is "sixty-four million, eight hundred twenty-three thousand, two hundred thirteen".