64243522 has 16 divisors (see below), whose sum is σ = 115928640. Its totient is φ = 26083728.

The previous prime is 64243519. The next prime is 64243573. The reversal of 64243522 is 22534246.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120493 + ... + 121024.

It is an arithmetic number, because the mean of its divisors is an integer number (7245540).

Almost surely, 2^64243522 is an apocalyptic number.

64243522 is a deficient number, since it is larger than the sum of its proper divisors (51685118).

64243522 is a wasteful number, since it uses less digits than its factorization.

64243522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241545.

The product of its digits is 11520, while the sum is 28.

The square root of 64243522 is about 8015.2056742170. The cubic root of 64243522 is about 400.5066953785.

Adding to 64243522 its reverse (22534246), we get a palindrome (86777768).

The spelling of 64243522 in words is "sixty-four million, two hundred forty-three thousand, five hundred twenty-two".