64563498 has 48 divisors (see below), whose sum is σ = 143609856. Its totient is φ = 20956320.

The previous prime is 64563469. The next prime is 64563509. The reversal of 64563498 is 89436546.

64563498 is a `hidden beast` number, since 6 + 4 + 5 + 634 + 9 + 8 = 666.

64563498 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 139215 + ... + 139677.

It is an arithmetic number, because the mean of its divisors is an integer number (2991872).

Almost surely, 2^64563498 is an apocalyptic number.

64563498 is an abundant number, since it is smaller than the sum of its proper divisors (79046358).

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

64563498 is a wasteful number, since it uses less digits than its factorization.

64563498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659 (or 656 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 64563498 is about 8035.1414424390. The cubic root of 64563498 is about 401.1705255006.

The spelling of 64563498 in words is "sixty-four million, five hundred sixty-three thousand, four hundred ninety-eight".