964128563 has 4 divisors (see below), whose sum is σ = 965553360. Its totient is φ = 962703768.

The previous prime is 964128553. The next prime is 964128569. The reversal of 964128563 is 365821469.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-964128563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (964128569) 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, 711383 + ... + 712736.

It is an arithmetic number, because the mean of its divisors is an integer number (241388340).

Almost surely, 2^964128563 is an apocalyptic number.

964128563 is a deficient number, since it is larger than the sum of its proper divisors (1424797).

964128563 is a wasteful number, since it uses less digits than its factorization.

964128563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424796.

The product of its digits is 311040, while the sum is 44.

The square root of 964128563 is about 31050.4196912055. The cubic root of 964128563 is about 987.8969617641.

The spelling of 964128563 in words is "nine hundred sixty-four million, one hundred twenty-eight thousand, five hundred sixty-three".