64764522 has 20 divisors (see below), whose sum is σ = 145120866. Its totient is φ = 21588120.

The previous prime is 64764517. The next prime is 64764523. The reversal of 64764522 is 22546746.

64764522 is a `hidden beast` number, since 6 + 4 + 7 + 645 + 2 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 49154121 + 15610401 = 7011^2 + 3951^2 .

It is not an unprimeable number, because it can be changed into a prime (64764523) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 199729 + ... + 200052.

Almost surely, 2^64764522 is an apocalyptic number.

64764522 is an abundant number, since it is smaller than the sum of its proper divisors (80356344).

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

64764522 is a wasteful number, since it uses less digits than its factorization.

64764522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399795 (or 399786 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 64764522 is about 8047.6407723009. The cubic root of 64764522 is about 401.5864537594.

The spelling of 64764522 in words is "sixty-four million, seven hundred sixty-four thousand, five hundred twenty-two".