64197508 has 24 divisors (see below), whose sum is σ = 124129152. Its totient is φ = 28896384.

The previous prime is 64197493. The next prime is 64197509. The reversal of 64197508 is 80579146.

64197508 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (64197509) 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 7 ways as a sum of consecutive naturals, for example, 18960 + ... + 22087.

It is an arithmetic number, because the mean of its divisors is an integer number (5172048).

Almost surely, 2^64197508 is an apocalyptic number.

64197508 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

64197508 is a deficient number, since it is larger than the sum of its proper divisors (59931644).

64197508 is a wasteful number, since it uses less digits than its factorization.

64197508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41091 (or 41089 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 64197508 is about 8012.3347408855. The cubic root of 64197508 is about 400.4110524450.

The spelling of 64197508 in words is "sixty-four million, one hundred ninety-seven thousand, five hundred eight".