64491298 has 8 divisors (see below), whose sum is σ = 96821100. Its totient is φ = 32217600.

The previous prime is 64491293. The next prime is 64491311. The reversal of 64491298 is 89219446.

It can be written as a sum of positive squares in 2 ways, for example, as 50225569 + 14265729 = 7087^2 + 3777^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (64491293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11023 + ... + 15826.

Almost surely, 2^64491298 is an apocalyptic number.

64491298 is a deficient number, since it is larger than the sum of its proper divisors (32329802).

64491298 is a wasteful number, since it uses less digits than its factorization.

64491298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28052.

The product of its digits is 124416, while the sum is 43.

The square root of 64491298 is about 8030.6474209742. The cubic root of 64491298 is about 401.0209295403.

The spelling of 64491298 in words is "sixty-four million, four hundred ninety-one thousand, two hundred ninety-eight".