800616961 has 4 divisors (see below), whose sum is σ = 814186800. Its totient is φ = 787047124.

The previous prime is 800616953. The next prime is 800616967. The reversal of 800616961 is 169616008.

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.

It is a cyclic number.

It is not a de Polignac number, because 800616961 - 2³ = 800616953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 800616961.

It is not an unprimeable number, because it can be changed into a prime (800616967) 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, 6784831 + ... + 6784948.

It is an arithmetic number, because the mean of its divisors is an integer number (203546700).

Almost surely, 2^800616961 is an apocalyptic number.

It is an amenable number.

800616961 is a deficient number, since it is larger than the sum of its proper divisors (13569839).

800616961 is a wasteful number, since it uses less digits than its factorization.

800616961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13569838.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 800616961 is about 28295.1755781794. The cubic root of 800616961 is about 928.5563453431.

The spelling of 800616961 in words is "eight hundred million, six hundred sixteen thousand, nine hundred sixty-one".