64606640226 has 8 divisors (see below), whose sum is σ = 129213280464. Its totient is φ = 21535546740.

The previous prime is 64606640173. The next prime is 64606640243. The reversal of 64606640226 is 62204660646.

It is a sphenic number, since it is the product of 3 distinct primes.

64606640226 is an admirable number.

It is a super-2 number, since 2×64606640226² (a number of 22 digits) contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 5383886680 + ... + 5383886691.

It is an arithmetic number, because the mean of its divisors is an integer number (16151660058).

Almost surely, 2^64606640226 is an apocalyptic number.

64606640226 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64606640226 is a wasteful number, since it uses less digits than its factorization.

64606640226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10767773376.

The product of its (nonzero) digits is 497664, while the sum is 42.

The spelling of 64606640226 in words is "sixty-four billion, six hundred six million, six hundred forty thousand, two hundred twenty-six".