77766416 has 40 divisors (see below), whose sum is σ = 185446464. Its totient is φ = 30764160.

The previous prime is 77766413. The next prime is 77766433. The reversal of 77766416 is 61466777.

It is not an unprimeable number, because it can be changed into a prime (77766413) 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 7 ways as a sum of consecutive naturals, for example, 25250 + ... + 28161.

Almost surely, 2^77766416 is an apocalyptic number.

It is an amenable number.

77766416 is an abundant number, since it is smaller than the sum of its proper divisors (107680048).

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

77766416 is a wasteful number, since it uses less digits than its factorization.

77766416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53439 (or 53433 counting only the distinct ones).

The product of its digits is 296352, while the sum is 44.

The square root of 77766416 is about 8818.5268611033. The cubic root of 77766416 is about 426.8389354276.

The spelling of 77766416 in words is "seventy-seven million, seven hundred sixty-six thousand, four hundred sixteen".