77905108 has 12 divisors (see below), whose sum is σ = 140732032. Its totient is φ = 37695960.

The previous prime is 77905103. The next prime is 77905109. The reversal of 77905108 is 80150977.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77905103) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 314010 + ... + 314257.

Almost surely, 2^77905108 is an apocalyptic number.

It is an amenable number.

77905108 is a deficient number, since it is larger than the sum of its proper divisors (62826924).

77905108 is a wasteful number, since it uses less digits than its factorization.

77905108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628302 (or 628300 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 77905108 is about 8826.3870298101. The cubic root of 77905108 is about 427.0925324203.

It can be divided in two parts, 77 and 905108, that added together give a triangular number (905185 = T₁₃₄₅).

The spelling of 77905108 in words is "seventy-seven million, nine hundred five thousand, one hundred eight".