64440498 has 8 divisors (see below), whose sum is σ = 128881008. Its totient is φ = 21480164.

The previous prime is 64440491. The next prime is 64440517. The reversal of 64440498 is 89404446.

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

64440498 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (64440491) 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, 5370036 + ... + 5370047.

It is an arithmetic number, because the mean of its divisors is an integer number (16110126).

Almost surely, 2^64440498 is an apocalyptic number.

64440498 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64440498 is a wasteful number, since it uses less digits than its factorization.

64440498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10740088.

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 64440498 is about 8027.4839146522. The cubic root of 64440498 is about 400.9156067283.

The spelling of 64440498 in words is "sixty-four million, four hundred forty thousand, four hundred ninety-eight".