64220626 has 4 divisors (see below), whose sum is σ = 96330942. Its totient is φ = 32110312.

The previous prime is 64220599. The next prime is 64220633. The reversal of 64220626 is 62602246.

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

It can be written as a sum of positive squares in only one way, i.e., 49773025 + 14447601 = 7055^2 + 3801^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64220594 and 64220603.

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, 16055155 + ... + 16055158.

Almost surely, 2^64220626 is an apocalyptic number.

64220626 is a deficient number, since it is larger than the sum of its proper divisors (32110316).

64220626 is a wasteful number, since it uses less digits than its factorization.

64220626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32110315.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 64220626 is about 8013.7772616913. Note that the first 3 decimals coincide. The cubic root of 64220626 is about 400.4591103426.

It can be divided in two parts, 64220 and 626, that added together give a palindrome (64846).

The spelling of 64220626 in words is "sixty-four million, two hundred twenty thousand, six hundred twenty-six".