77808214 has 8 divisors (see below), whose sum is σ = 127322568. Its totient is φ = 35367360.

The previous prime is 77808193. The next prime is 77808223. The reversal of 77808214 is 41280877.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1768347 + ... + 1768390.

It is an arithmetic number, because the mean of its divisors is an integer number (15915321).

Almost surely, 2^77808214 is an apocalyptic number.

77808214 is a deficient number, since it is larger than the sum of its proper divisors (49514354).

77808214 is a wasteful number, since it uses less digits than its factorization.

77808214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3536750.

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 77808214 is about 8820.8964397050. The cubic root of 77808214 is about 426.9153943898.

The spelling of 77808214 in words is "seventy-seven million, eight hundred eight thousand, two hundred fourteen".