64897753 has 4 divisors (see below), whose sum is σ = 65566900. Its totient is φ = 64228608.

The previous prime is 64897751. The next prime is 64897757. The reversal of 64897753 is 35779846.

It is a happy number.

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 26296384 + 38601369 = 5128^2 + 6213^2 .

It is a cyclic number.

It is not a de Polignac number, because 64897753 - 2¹ = 64897751 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64897697 and 64897706.

It is not an unprimeable number, because it can be changed into a prime (64897751) 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, 334428 + ... + 334621.

It is an arithmetic number, because the mean of its divisors is an integer number (16391725).

Almost surely, 2^64897753 is an apocalyptic number.

It is an amenable number.

64897753 is a deficient number, since it is larger than the sum of its proper divisors (669147).

64897753 is an equidigital number, since it uses as much as digits as its factorization.

64897753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669146.

The product of its digits is 1270080, while the sum is 49.

The square root of 64897753 is about 8055.9141628992. The cubic root of 64897753 is about 401.8616410401.

The spelling of 64897753 in words is "sixty-four million, eight hundred ninety-seven thousand, seven hundred fifty-three".