64037857 has 4 divisors (see below), whose sum is σ = 68963860. Its totient is φ = 59111856.

The previous prime is 64037849. The next prime is 64037917. The reversal of 64037857 is 75873046.

64037857 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, and also an emirpimes, since its reverse is a distinct semiprime: 75873046 = 2 ⋅37936523.

It can be written as a sum of positive squares in 2 ways, for example, as 31820881 + 32216976 = 5641^2 + 5676^2 .

It is a cyclic number.

It is not a de Polignac number, because 64037857 - 2³ = 64037849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64037807) 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, 2462982 + ... + 2463007.

It is an arithmetic number, because the mean of its divisors is an integer number (17240965).

Almost surely, 2^64037857 is an apocalyptic number.

It is an amenable number.

64037857 is a deficient number, since it is larger than the sum of its proper divisors (4926003).

64037857 is a wasteful number, since it uses less digits than its factorization.

64037857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4926002.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 64037857 is about 8002.3657127127. The cubic root of 64037857 is about 400.0788532044.

The spelling of 64037857 in words is "sixty-four million, thirty-seven thousand, eight hundred fifty-seven".