80776696 has 144 divisors (see below), whose sum is σ = 210145320. Its totient is φ = 28828800.

The previous prime is 80776643. The next prime is 80776721. The reversal of 80776696 is 69667708.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 616551 + ... + 616681.

Almost surely, 2^80776696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80776696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105072660).

80776696 is an abundant number, since it is smaller than the sum of its proper divisors (129368624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80776696 is a wasteful number, since it uses less digits than its factorization.

80776696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 80776696 is about 8987.5856602316. The cubic root of 80776696 is about 432.2769000945.

The spelling of 80776696 in words is "eighty million, seven hundred seventy-six thousand, six hundred ninety-six".