64297998 has 24 divisors (see below), whose sum is σ = 139464000. Its totient is φ = 21409344.

The previous prime is 64297997. The next prime is 64298009. The reversal of 64297998 is 89979246.

64297998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64297991) 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 11 ways as a sum of consecutive naturals, for example, 25603 + ... + 28001.

It is an arithmetic number, because the mean of its divisors is an integer number (5811000).

Almost surely, 2^64297998 is an apocalyptic number.

64297998 is an abundant number, since it is smaller than the sum of its proper divisors (75166002).

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

64297998 is a wasteful number, since it uses less digits than its factorization.

64297998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3896 (or 3893 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 64297998 is about 8018.6032449548. The cubic root of 64297998 is about 400.6198680794.

The spelling of 64297998 in words is "sixty-four million, two hundred ninety-seven thousand, nine hundred ninety-eight".