64704553 has 4 divisors (see below), whose sum is σ = 64829268. Its totient is φ = 64579840.

The previous prime is 64704517. The next prime is 64704569. The reversal of 64704553 is 35540746.

It is a happy number.

64704553 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 46963609 + 17740944 = 6853^2 + 4212^2 .

It is a cyclic number.

It is not a de Polignac number, because 64704553 - 2²¹ = 62607401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64704593) 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, 61576 + ... + 62617.

It is an arithmetic number, because the mean of its divisors is an integer number (16207317).

Almost surely, 2^64704553 is an apocalyptic number.

It is an amenable number.

64704553 is a deficient number, since it is larger than the sum of its proper divisors (124715).

64704553 is a wasteful number, since it uses less digits than its factorization.

64704553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124714.

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 64704553 is about 8043.9140348465. The cubic root of 64704553 is about 401.4624652222.

The spelling of 64704553 in words is "sixty-four million, seven hundred four thousand, five hundred fifty-three".