64607563 has 16 divisors (see below), whose sum is σ = 69050880. Its totient is φ = 60345376.

The previous prime is 64607561. The next prime is 64607573. The reversal of 64607563 is 36570646.

It is a cyclic number.

It is not a de Polignac number, because 64607563 - 2¹ = 64607561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64607561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145620 + ... + 146062.

It is an arithmetic number, because the mean of its divisors is an integer number (4315680).

Almost surely, 2^64607563 is an apocalyptic number.

64607563 is a deficient number, since it is larger than the sum of its proper divisors (4443317).

64607563 is a wasteful number, since it uses less digits than its factorization.

64607563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 64607563 is about 8037.8829924303. The cubic root of 64607563 is about 401.2617718942.

The spelling of 64607563 in words is "sixty-four million, six hundred seven thousand, five hundred sixty-three".