64744122 has 16 divisors (see below), whose sum is σ = 131683680. Its totient is φ = 21215472.

The previous prime is 64744091. The next prime is 64744123. The reversal of 64744122 is 22144746.

It is a self number, because there is not a number n which added to its sum of digits gives 64744122.

It is not an unprimeable number, because it can be changed into a prime (64744123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91093 + ... + 91800.

It is an arithmetic number, because the mean of its divisors is an integer number (8230230).

Almost surely, 2^64744122 is an apocalyptic number.

64744122 is an abundant number, since it is smaller than the sum of its proper divisors (66939558).

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

64744122 is a wasteful number, since it uses less digits than its factorization.

64744122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182957.

The product of its digits is 10752, while the sum is 30.

The square root of 64744122 is about 8046.3732202776. The cubic root of 64744122 is about 401.5442844579.

Adding to 64744122 its reverse (22144746), we get a palindrome (86888868).

The spelling of 64744122 in words is "sixty-four million, seven hundred forty-four thousand, one hundred twenty-two".