64005797 has 4 divisors (see below), whose sum is σ = 65566956. Its totient is φ = 62444640.

The previous prime is 64005779. The next prime is 64005817. The reversal of 64005797 is 79750046.

64005797 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 4268356 + 59737441 = 2066^2 + 7729^2 .

It is not a de Polignac number, because 64005797 - 2⁸ = 64005541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64005797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64005707) 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, 780518 + ... + 780599.

It is an arithmetic number, because the mean of its divisors is an integer number (16391739).

Almost surely, 2^64005797 is an apocalyptic number.

It is an amenable number.

64005797 is a deficient number, since it is larger than the sum of its proper divisors (1561159).

64005797 is a wasteful number, since it uses less digits than its factorization.

64005797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561158.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 64005797 is about 8000.3623042960. The cubic root of 64005797 is about 400.0120767187.

The spelling of 64005797 in words is "sixty-four million, five thousand, seven hundred ninety-seven".