64830563 has 8 divisors (see below), whose sum is σ = 74382432. Its totient is φ = 55351296.

The previous prime is 64830547. The next prime is 64830593. The reversal of 64830563 is 36503846.

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

It is not a de Polignac number, because 64830563 - 2⁴ = 64830547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64830523) 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, 16220 + ... + 19817.

It is an arithmetic number, because the mean of its divisors is an integer number (9297804).

Almost surely, 2^64830563 is an apocalyptic number.

64830563 is a deficient number, since it is larger than the sum of its proper divisors (9551869).

64830563 is a wasteful number, since it uses less digits than its factorization.

64830563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36301.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 64830563 is about 8051.7428548110. The cubic root of 64830563 is about 401.7229078995.

The spelling of 64830563 in words is "sixty-four million, eight hundred thirty thousand, five hundred sixty-three".