995399665 has 8 divisors (see below), whose sum is σ = 1286362728. Its totient is φ = 735064320.

The previous prime is 995399653. The next prime is 995399687. The reversal of 995399665 is 566993599.

It can be written as a sum of positive squares in 4 ways, for example, as 52664049 + 942735616 = 7257^2 + 30704^2 .

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

It is not a de Polignac number, because 995399665 - 2⁵ = 995399633 is a prime.

It is a super-2 number, since 2×995399665² = 1981640986164224450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7656856 + ... + 7656985.

It is an arithmetic number, because the mean of its divisors is an integer number (160795341).

Almost surely, 2^995399665 is an apocalyptic number.

It is an amenable number.

995399665 is a deficient number, since it is larger than the sum of its proper divisors (290963063).

995399665 is a wasteful number, since it uses less digits than its factorization.

995399665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15313859.

The product of its digits is 17714700, while the sum is 61.

The square root of 995399665 is about 31549.9550712834. The cubic root of 995399665 is about 998.4641975182.

The spelling of 995399665 in words is "nine hundred ninety-five million, three hundred ninety-nine thousand, six hundred sixty-five".