64522361 has 12 divisors (see below), whose sum is σ = 70770492. Its totient is φ = 58619904.

The previous prime is 64522351. The next prime is 64522373. The reversal of 64522361 is 16322546.

64522361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 2805625 + 61716736 = 1675^2 + 7856^2 .

It is a de Polignac number, because none of the positive numbers 2^k-64522361 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64522301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12041 + ... + 16553.

It is an arithmetic number, because the mean of its divisors is an integer number (5897541).

Almost surely, 2^64522361 is an apocalyptic number.

It is an amenable number.

64522361 is a deficient number, since it is larger than the sum of its proper divisors (6248131).

64522361 is a wasteful number, since it uses less digits than its factorization.

64522361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4588 (or 4559 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 64522361 is about 8032.5812165206. The cubic root of 64522361 is about 401.0853047043.

The spelling of 64522361 in words is "sixty-four million, five hundred twenty-two thousand, three hundred sixty-one".