77801814 has 12 divisors (see below), whose sum is σ = 168570636. Its totient is φ = 25933932.

The previous prime is 77801803. The next prime is 77801831. The reversal of 77801814 is 41810877.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2161144 + ... + 2161179.

It is an arithmetic number, because the mean of its divisors is an integer number (14047553).

Almost surely, 2^77801814 is an apocalyptic number.

77801814 is an abundant number, since it is smaller than the sum of its proper divisors (90768822).

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

77801814 is a wasteful number, since it uses less digits than its factorization.

77801814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4322331 (or 4322328 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The square root of 77801814 is about 8820.5336573248. The cubic root of 77801814 is about 426.9036889699.

The spelling of 77801814 in words is "seventy-seven million, eight hundred one thousand, eight hundred fourteen".