64219223 has 2 divisors, whose sum is σ = 64219224. Its totient is φ = 64219222.

The previous prime is 64219219. The next prime is 64219247. The reversal of 64219223 is 32291246.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64219223 - 2² = 64219219 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64219273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32109611 + 32109612.

It is an arithmetic number, because the mean of its divisors is an integer number (32109612).

Almost surely, 2^64219223 is an apocalyptic number.

64219223 is a deficient number, since it is larger than the sum of its proper divisors (1).

64219223 is an equidigital number, since it uses as much as digits as its factorization.

64219223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

The square root of 64219223 is about 8013.6897244653. The cubic root of 64219223 is about 400.4561941029.

The spelling of 64219223 in words is "sixty-four million, two hundred nineteen thousand, two hundred twenty-three".