64223079 has 4 divisors (see below), whose sum is σ = 85630776. Its totient is φ = 42815384.

The previous prime is 64223077. The next prime is 64223111. The reversal of 64223079 is 97032246.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64223079 - 2¹ = 64223077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64223077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10703844 + ... + 10703849.

It is an arithmetic number, because the mean of its divisors is an integer number (21407694).

Almost surely, 2^64223079 is an apocalyptic number.

64223079 is a deficient number, since it is larger than the sum of its proper divisors (21407697).

64223079 is a wasteful number, since it uses less digits than its factorization.

64223079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21407696.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 64223079 is about 8013.9303091554. The cubic root of 64223079 is about 400.4642089833.

The spelling of 64223079 in words is "sixty-four million, two hundred twenty-three thousand, seventy-nine".