64622223 has 12 divisors (see below), whose sum is σ = 94468920. Its totient is φ = 42561936.

The previous prime is 64622189. The next prime is 64622251. The reversal of 64622223 is 32222646.

It is not a de Polignac number, because 64622223 - 2⁸ = 64621967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64622263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42508 + ... + 44001.

It is an arithmetic number, because the mean of its divisors is an integer number (7872410).

Almost surely, 2^64622223 is an apocalyptic number.

64622223 is a deficient number, since it is larger than the sum of its proper divisors (29846697).

64622223 is a wasteful number, since it uses less digits than its factorization.

64622223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86598 (or 86595 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 64622223 is about 8038.7948723674. The cubic root of 64622223 is about 401.2921194904.

Adding to 64622223 its reverse (32222646), we get a palindrome (96844869).

The spelling of 64622223 in words is "sixty-four million, six hundred twenty-two thousand, two hundred twenty-three".