64630543 has 4 divisors (see below), whose sum is σ = 65258128. Its totient is φ = 64002960.

The previous prime is 64630541. The next prime is 64630603. The reversal of 64630543 is 34503646.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64630543 - 2¹ = 64630541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64630541) 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, 313638 + ... + 313843.

It is an arithmetic number, because the mean of its divisors is an integer number (16314532).

Almost surely, 2^64630543 is an apocalyptic number.

64630543 is a deficient number, since it is larger than the sum of its proper divisors (627585).

64630543 is a wasteful number, since it uses less digits than its factorization.

64630543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627584.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 64630543 is about 8039.3123462147. The cubic root of 64630543 is about 401.3093406413.

The spelling of 64630543 in words is "sixty-four million, six hundred thirty thousand, five hundred forty-three".