64872226 has 4 divisors (see below), whose sum is σ = 97308342. Its totient is φ = 32436112.

The previous prime is 64872191. The next prime is 64872239. The reversal of 64872226 is 62227846.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62227846 = 2 ⋅31113923.

It can be written as a sum of positive squares in only one way, i.e., 34633225 + 30239001 = 5885^2 + 5499^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16218055 + ... + 16218058.

Almost surely, 2^64872226 is an apocalyptic number.

64872226 is a deficient number, since it is larger than the sum of its proper divisors (32436116).

64872226 is a wasteful number, since it uses less digits than its factorization.

64872226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32436115.

The product of its digits is 64512, while the sum is 37.

The square root of 64872226 is about 8054.3296431174. The cubic root of 64872226 is about 401.8089444678.

The spelling of 64872226 in words is "sixty-four million, eight hundred seventy-two thousand, two hundred twenty-six".