64849686 has 16 divisors (see below), whose sum is σ = 141490368. Its totient is φ = 19651400.

The previous prime is 64849663. The next prime is 64849691. The reversal of 64849686 is 68694846.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491220 + ... + 491351.

It is an arithmetic number, because the mean of its divisors is an integer number (8843148).

Almost surely, 2^64849686 is an apocalyptic number.

64849686 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

64849686 is an abundant number, since it is smaller than the sum of its proper divisors (76640682).

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

64849686 is a wasteful number, since it uses less digits than its factorization.

64849686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982587.

The product of its digits is 1990656, while the sum is 51.

The square root of 64849686 is about 8052.9302741300. The cubic root of 64849686 is about 401.7624026049.

The spelling of 64849686 in words is "sixty-four million, eight hundred forty-nine thousand, six hundred eighty-six".