77890516 has 12 divisors (see below), whose sum is σ = 148700160. Its totient is φ = 35404760.

The previous prime is 77890511. The next prime is 77890517. The reversal of 77890516 is 61509877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77890511) by changing a digit.

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, 885076 + ... + 885163.

It is an arithmetic number, because the mean of its divisors is an integer number (12391680).

Almost surely, 2^77890516 is an apocalyptic number.

It is an amenable number.

77890516 is a deficient number, since it is larger than the sum of its proper divisors (70809644).

77890516 is a wasteful number, since it uses less digits than its factorization.

77890516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770254 (or 1770252 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 77890516 is about 8825.5603788088. The cubic root of 77890516 is about 427.0658652627.

The spelling of 77890516 in words is "seventy-seven million, eight hundred ninety thousand, five hundred sixteen".