995563 has 4 divisors (see below), whose sum is σ = 997560. Its totient is φ = 993568.

The previous prime is 995551. The next prime is 995567. The reversal of 995563 is 365599.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365599 = 13 ⋅28123.

It is a cyclic number.

It is not a de Polignac number, because 995563 - 2⁵ = 995531 is a prime.

It is a super-2 number, since 2×995563² = 1982291373938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (995567) 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, 468 + ... + 1486.

It is an arithmetic number, because the mean of its divisors is an integer number (249390).

2⁹⁹⁵⁵⁶³ is an apocalyptic number.

995563 is a deficient number, since it is larger than the sum of its proper divisors (1997).

995563 is a wasteful number, since it uses less digits than its factorization.

995563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996.

The product of its digits is 36450, while the sum is 37.

The square root of 995563 is about 997.7790336542. The cubic root of 995563 is about 99.8518807151.

The spelling of 995563 in words is "nine hundred ninety-five thousand, five hundred sixty-three".