77328811 has 12 divisors (see below), whose sum is σ = 90461280. Its totient is φ = 65908080.

The previous prime is 77328791. The next prime is 77328821. The reversal of 77328811 is 11882377.

It is not a de Polignac number, because 77328811 - 2⁹ = 77328299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77328821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4510 + ... + 13228.

It is an arithmetic number, because the mean of its divisors is an integer number (7538440).

Almost surely, 2^77328811 is an apocalyptic number.

77328811 is a deficient number, since it is larger than the sum of its proper divisors (13132469).

77328811 is a wasteful number, since it uses less digits than its factorization.

77328811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8914 (or 8907 counting only the distinct ones).

The product of its digits is 18816, while the sum is 37.

The square root of 77328811 is about 8793.6801738521. The cubic root of 77328811 is about 426.0367969126.

It can be divided in two parts, 773 and 28811, that added together give a square (29584 = 172²).

The spelling of 77328811 in words is "seventy-seven million, three hundred twenty-eight thousand, eight hundred eleven".