64198305 has 32 divisors (see below), whose sum is σ = 114576000. Its totient is φ = 34105536.

The previous prime is 64198301. The next prime is 64198331. The reversal of 64198305 is 50389146.

64198305 is a `hidden beast` number, since 641 + 9 + 8 + 3 + 0 + 5 = 666.

It is not a de Polignac number, because 64198305 - 2² = 64198301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64198305.

It is not an unprimeable number, because it can be changed into a prime (64198301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40671 + ... + 42219.

It is an arithmetic number, because the mean of its divisors is an integer number (3580500).

Almost surely, 2^64198305 is an apocalyptic number.

It is an amenable number.

64198305 is a deficient number, since it is larger than the sum of its proper divisors (50377695).

64198305 is a wasteful number, since it uses less digits than its factorization.

64198305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1870 (or 1864 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 64198305 is about 8012.3844765463. The cubic root of 64198305 is about 400.4127094475.

The spelling of 64198305 in words is "sixty-four million, one hundred ninety-eight thousand, three hundred five".