64746563 has 8 divisors (see below), whose sum is σ = 74045280. Its totient is φ = 55460160.

The previous prime is 64746551. The next prime is 64746581. The reversal of 64746563 is 36564746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64746563 - 2¹² = 64742467 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 64746563.

It is not an unprimeable number, because it can be changed into a prime (64740563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16583 + ... + 20111.

It is an arithmetic number, because the mean of its divisors is an integer number (9255660).

Almost surely, 2^64746563 is an apocalyptic number.

64746563 is a deficient number, since it is larger than the sum of its proper divisors (9298717).

64746563 is a wasteful number, since it uses less digits than its factorization.

64746563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6157.

The product of its digits is 362880, while the sum is 41.

The square root of 64746563 is about 8046.5249020928. The cubic root of 64746563 is about 401.5493307707.

The spelling of 64746563 in words is "sixty-four million, seven hundred forty-six thousand, five hundred sixty-three".