799159661 has 4 divisors (see below), whose sum is σ = 812704800. Its totient is φ = 785614524.

The previous prime is 799159651. The next prime is 799159663. The reversal of 799159661 is 166951997.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 166951997 = 569 ⋅293413.

It is a cyclic number.

It is not a de Polignac number, because 799159661 - 2¹⁰ = 799158637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (799159663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6772481 + ... + 6772598.

It is an arithmetic number, because the mean of its divisors is an integer number (203176200).

Almost surely, 2^799159661 is an apocalyptic number.

It is an amenable number.

799159661 is a deficient number, since it is larger than the sum of its proper divisors (13545139).

799159661 is a wasteful number, since it uses less digits than its factorization.

799159661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13545138.

The product of its digits is 918540, while the sum is 53.

The square root of 799159661 is about 28269.4121092038. The cubic root of 799159661 is about 927.9926105021.

The spelling of 799159661 in words is "seven hundred ninety-nine million, one hundred fifty-nine thousand, six hundred sixty-one".