64840498 has 8 divisors (see below), whose sum is σ = 98593308. Its totient is φ = 31976064.

The previous prime is 64840493. The next prime is 64840547. The reversal of 64840498 is 89404846.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 64368529 + 471969 = 8023^2 + 687^2 .

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 (64840493) 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, 221911 + ... + 222202.

Almost surely, 2^64840498 is an apocalyptic number.

64840498 is a deficient number, since it is larger than the sum of its proper divisors (33752810).

64840498 is a wasteful number, since it uses less digits than its factorization.

64840498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444188.

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 64840498 is about 8052.3597783507. The cubic root of 64840498 is about 401.7434276104.

The spelling of 64840498 in words is "sixty-four million, eight hundred forty thousand, four hundred ninety-eight".