64557822 has 32 divisors (see below), whose sum is σ = 151552512. Its totient is φ = 17946144.

The previous prime is 64557817. The next prime is 64557827. The reversal of 64557822 is 22875546.

It is an interprime number because it is at equal distance from previous prime (64557817) and next prime (64557827).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64557827) 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, 19218 + ... + 22325.

It is an arithmetic number, because the mean of its divisors is an integer number (4736016).

Almost surely, 2^64557822 is an apocalyptic number.

64557822 is an abundant number, since it is smaller than the sum of its proper divisors (86994690).

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

64557822 is a wasteful number, since it uses less digits than its factorization.

64557822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41592.

The product of its digits is 134400, while the sum is 39.

The square root of 64557822 is about 8034.7882361640. The cubic root of 64557822 is about 401.1587690608.

The spelling of 64557822 in words is "sixty-four million, five hundred fifty-seven thousand, eight hundred twenty-two".