64662822 has 48 divisors (see below), whose sum is σ = 164035872. Its totient is φ = 18023040.

The previous prime is 64662817. The next prime is 64662823. The reversal of 64662822 is 22826646.

64662822 is a `hidden beast` number, since 6 + 4 + 6 + 628 + 22 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64662823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1093 + ... + 11424.

It is an arithmetic number, because the mean of its divisors is an integer number (3417414).

Almost surely, 2^64662822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64662822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82017936).

64662822 is an abundant number, since it is smaller than the sum of its proper divisors (99373050).

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

64662822 is a wasteful number, since it uses less digits than its factorization.

64662822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12573 (or 12570 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 64662822 is about 8041.3196678157. The cubic root of 64662822 is about 401.3761393386.

The spelling of 64662822 in words is "sixty-four million, six hundred sixty-two thousand, eight hundred twenty-two".