776816801 has 8 divisors (see below), whose sum is σ = 795393984. Its totient is φ = 758262960.

The previous prime is 776816797. The next prime is 776816857. The reversal of 776816801 is 108618677.

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

It is a cyclic number.

It is not a de Polignac number, because 776816801 - 2² = 776816797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (776815801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74531 + ... + 84311.

It is an arithmetic number, because the mean of its divisors is an integer number (99424248).

Almost surely, 2^776816801 is an apocalyptic number.

It is an amenable number.

776816801 is a deficient number, since it is larger than the sum of its proper divisors (18577183).

776816801 is a wasteful number, since it uses less digits than its factorization.

776816801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11671.

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 776816801 is about 27871.4334220542. The cubic root of 776816801 is about 919.2624843085.

The spelling of 776816801 in words is "seven hundred seventy-six million, eight hundred sixteen thousand, eight hundred one".