80777876 has 12 divisors (see below), whose sum is σ = 146236020. Its totient is φ = 38996160.

The previous prime is 80777861. The next prime is 80777887. The reversal of 80777876 is 67877708.

It can be written as a sum of positive squares in 2 ways, for example, as 57002500 + 23775376 = 7550^2 + 4876^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348065 + ... + 348296.

It is an arithmetic number, because the mean of its divisors is an integer number (12186335).

Almost surely, 2^80777876 is an apocalyptic number.

It is an amenable number.

80777876 is a deficient number, since it is larger than the sum of its proper divisors (65458144).

80777876 is a wasteful number, since it uses less digits than its factorization.

80777876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696394 (or 696392 counting only the distinct ones).

The product of its (nonzero) digits is 921984, while the sum is 50.

The square root of 80777876 is about 8987.6513060977. The cubic root of 80777876 is about 432.2790050096.

The spelling of 80777876 in words is "eighty million, seven hundred seventy-seven thousand, eight hundred seventy-six".