64221027 has 16 divisors (see below), whose sum is σ = 92527008. Its totient is φ = 39386880.

The previous prime is 64221013. The next prime is 64221029. The reversal of 64221027 is 72012246.

It is not a de Polignac number, because 64221027 - 2¹⁶ = 64155491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64220988 and 64221006.

It is not an unprimeable number, because it can be changed into a prime (64221029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9577 + ... + 14837.

It is an arithmetic number, because the mean of its divisors is an integer number (5782938).

Almost surely, 2^64221027 is an apocalyptic number.

64221027 is a deficient number, since it is larger than the sum of its proper divisors (28305981).

64221027 is a wasteful number, since it uses less digits than its factorization.

64221027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5590.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 64221027 is about 8013.8022810648. The cubic root of 64221027 is about 400.4599438431.

The spelling of 64221027 in words is "sixty-four million, two hundred twenty-one thousand, twenty-seven".