64312849 has 4 divisors (see below), whose sum is σ = 65367220. Its totient is φ = 63258480.

The previous prime is 64312841. The next prime is 64312877. The reversal of 64312849 is 94821346.

64312849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17977600 + 46335249 = 4240^2 + 6807^2 .

It is a cyclic number.

It is not a de Polignac number, because 64312849 - 2³ = 64312841 is a prime.

It is a super-3 number, since 3×64312849³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64312841) 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 3 ways as a sum of consecutive naturals, for example, 527094 + ... + 527215.

It is an arithmetic number, because the mean of its divisors is an integer number (16341805).

Almost surely, 2^64312849 is an apocalyptic number.

It is an amenable number.

64312849 is a deficient number, since it is larger than the sum of its proper divisors (1054371).

64312849 is a wasteful number, since it uses less digits than its factorization.

64312849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054370.

The product of its digits is 41472, while the sum is 37.

The square root of 64312849 is about 8019.5292255843. The cubic root of 64312849 is about 400.6507096185.

The spelling of 64312849 in words is "sixty-four million, three hundred twelve thousand, eight hundred forty-nine".