64963601 has 4 divisors (see below), whose sum is σ = 66719412. Its totient is φ = 63207792.

The previous prime is 64963589. The next prime is 64963609. The reversal of 64963601 is 10636946.

64963601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 8060²+1.

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 58125376 + 6838225 = 7624^2 + 2615^2 .

It is a cyclic number.

It is not a de Polignac number, because 64963601 - 2⁶ = 64963537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64963609) 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, 877850 + ... + 877923.

It is an arithmetic number, because the mean of its divisors is an integer number (16679853).

Almost surely, 2^64963601 is an apocalyptic number.

It is an amenable number.

64963601 is a deficient number, since it is larger than the sum of its proper divisors (1755811).

64963601 is a wasteful number, since it uses less digits than its factorization.

64963601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755810.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 64963601 is about 8060.0000620347. Note that the first 4 decimals coincide. The cubic root of 64963601 is about 401.9975103597.

The spelling of 64963601 in words is "sixty-four million, nine hundred sixty-three thousand, six hundred one".